diff --git a/elastica/interaction.py b/elastica/interaction.py
index 7504670..587598d 100644
--- a/elastica/interaction.py
+++ b/elastica/interaction.py
@@ -8,14 +8,11 @@ __all__ = [
 
 
 import numpy as np
-from elastica.utils import MaxDimension
 from elastica.external_forces import NoForces
 
 
-import numba
 from numba import njit
 from elastica._linalg import (
-    _batch_matmul,
     _batch_matvec,
     _batch_cross,
     _batch_norm,
@@ -27,6 +24,7 @@ from elastica._linalg import (
     _batch_matrix_transpose,
     _batch_vec_oneD_vec_cross,
 )
+import warnings
 
 
 @njit(cache=True)
@@ -71,21 +69,22 @@ def find_slipping_elements(velocity_slip, velocity_threshold):
 
 
 @njit(cache=True)
-def nodes_to_elements(input):
+def node_to_element_mass_or_force(input):
     """
-    This function converts the rod-like object dofs on nodes to
-    dofs on elements. For example, node velocity is converted to
-    element velocity.
+    This function converts the mass/forces on rod nodes to
+    elements, where special treatment is necessary at the ends.
 
     Parameters
     ----------
     input: numpy.ndarray
-        2D (dim, blocksize) array containing data with 'float' type.
+        2D (dim, blocksize) array containing nodal mass/forces
+        with 'float' type.
 
     Returns
     -------
     output: numpy.ndarray
-        2D (dim, blocksize) array containing data with 'float' type.
+        2D (dim, blocksize) array containing elemental mass/forces
+        with 'float' type.
     """
     """
     Developer Notes
@@ -107,6 +106,19 @@ def nodes_to_elements(input):
     return output
 
 
+def nodes_to_elements(input):
+    warnings.warn(
+        # Change the warning to error on v0.3.1
+        # Remove the function beyond v0.4.0
+        "This function is now deprecated (issue #80). Please use "
+        "elastica.interaction.node_to_element_mass_or_force() "
+        "instead for node-to-element interpolation of mass/forces. "
+        "The function will be removed in the future (v0.3.1).",
+        DeprecationWarning,
+    )
+    return node_to_element_mass_or_force(input)
+
+
 @njit(cache=True)
 def elements_to_nodes_inplace(vector_in_element_frame, vector_in_node_frame):
     """
@@ -202,6 +214,7 @@ class InteractionPlane:
             self.k,
             self.nu,
             system.radius,
+            system.mass,
             system.position_collection,
             system.velocity_collection,
             system.internal_forces,
@@ -217,6 +230,7 @@ def apply_normal_force_numba(
     k,
     nu,
     radius,
+    mass,
     position_collection,
     velocity_collection,
     internal_forces,
@@ -238,7 +252,7 @@ def apply_normal_force_numba(
 
     # Compute plane response force
     nodal_total_forces = _batch_vector_sum(internal_forces, external_forces)
-    element_total_forces = nodes_to_elements(nodal_total_forces)
+    element_total_forces = node_to_element_mass_or_force(nodal_total_forces)
 
     force_component_along_normal_direction = _batch_product_i_ik_to_k(
         plane_normal, element_total_forces
@@ -259,7 +273,7 @@ def apply_normal_force_numba(
     plane_response_force = -forces_along_normal_direction
 
     # Elastic force response due to penetration
-    element_position = node_to_element_pos_or_vel(position_collection)
+    element_position = node_to_element_position(position_collection)
     distance_from_plane = _batch_product_i_ik_to_k(
         plane_normal, (element_position - plane_origin)
     )
@@ -267,7 +281,9 @@ def apply_normal_force_numba(
     elastic_force = -k * _batch_product_i_k_to_ik(plane_normal, plane_penetration)
 
     # Damping force response due to velocity towards the plane
-    element_velocity = node_to_element_pos_or_vel(velocity_collection)
+    element_velocity = node_to_element_velocity(
+        mass=mass, node_velocity_collection=velocity_collection
+    )
     normal_component_of_element_velocity = _batch_product_i_ik_to_k(
         plane_normal, element_velocity
     )
@@ -400,6 +416,7 @@ class AnisotropicFrictionalPlane(NoForces, InteractionPlane):
             self.static_mu_backward,
             self.static_mu_sideways,
             system.radius,
+            system.mass,
             system.tangents,
             system.position_collection,
             system.director_collection,
@@ -427,6 +444,7 @@ def anisotropic_friction(
     static_mu_backward,
     static_mu_sideways,
     radius,
+    mass,
     tangents,
     position_collection,
     director_collection,
@@ -444,6 +462,7 @@ def anisotropic_friction(
         k,
         nu,
         radius,
+        mass,
         position_collection,
         velocity_collection,
         internal_forces,
@@ -466,7 +485,9 @@ def anisotropic_friction(
         1 / (tangent_perpendicular_to_normal_direction_mag + 1e-14),
         tangent_perpendicular_to_normal_direction,
     )
-    element_velocity = node_to_element_pos_or_vel(velocity_collection)
+    element_velocity = node_to_element_velocity(
+        mass=mass, node_velocity_collection=velocity_collection
+    )
     # first apply axial kinetic friction
     velocity_mag_along_axial_direction = _batch_dot(element_velocity, axial_direction)
     velocity_along_axial_direction = _batch_product_k_ik_to_ik(
@@ -550,7 +571,7 @@ def anisotropic_friction(
 
     # now axial static friction
     nodal_total_forces = _batch_vector_sum(internal_forces, external_forces)
-    element_total_forces = nodes_to_elements(nodal_total_forces)
+    element_total_forces = node_to_element_mass_or_force(nodal_total_forces)
     force_component_along_axial_direction = _batch_dot(
         element_total_forces, axial_direction
     )
@@ -661,21 +682,24 @@ def sum_over_elements(input):
 
 
 @njit(cache=True)
-def node_to_element_pos_or_vel(vector_in_node_frame):
+def node_to_element_position(node_position_collection):
     """
-    This function computes the velocity of the elements.
+    This function computes the position of the elements
+    from the nodal values.
     Here we define a separate function because benchmark results
     showed that using Numba, we get more than 3 times faster calculation.
 
     Parameters
     ----------
-    vector_in_node_frame: numpy.ndarray
-        2D (dim, blocksize) array containing data with 'float' type.
+    node_position_collection: numpy.ndarray
+        2D (dim, blocksize) array containing nodal positions with
+        'float' type.
 
     Returns
     -------
-    vector_in_element_frame: numpy.ndarray
-        2D (dim, blocksize) array containing data with 'float' type.
+    element_position_collection: numpy.ndarray
+        2D (dim, blocksize) array containing elemental positions with
+        'float' type.
     """
     """
     Developer Notes
@@ -687,25 +711,77 @@ def node_to_element_pos_or_vel(vector_in_node_frame):
     This version: 729 ns ± 14.3 ns per loop
 
     """
-    n_elem = vector_in_node_frame.shape[1] - 1
-    vector_in_element_frame = np.empty((3, n_elem))
+    n_elem = node_position_collection.shape[1] - 1
+    element_position_collection = np.empty((3, n_elem))
+    for k in range(n_elem):
+        element_position_collection[0, k] = 0.5 * (
+            node_position_collection[0, k + 1] + node_position_collection[0, k]
+        )
+        element_position_collection[1, k] = 0.5 * (
+            node_position_collection[1, k + 1] + node_position_collection[1, k]
+        )
+        element_position_collection[2, k] = 0.5 * (
+            node_position_collection[2, k + 1] + node_position_collection[2, k]
+        )
+
+    return element_position_collection
+
+
+@njit(cache=True)
+def node_to_element_velocity(mass, node_velocity_collection):
+    """
+    This function computes the velocity of the elements
+    from the nodal values. Uses the velocity of center of mass
+    in order to conserve momentum during computation.
+
+    Parameters
+    ----------
+    mass: numpy.ndarray
+        2D (dim, blocksize) array containing nodal masses with
+        'float' type.
+    node_velocity_collection: numpy.ndarray
+        2D (dim, blocksize) array containing nodal velocities with
+        'float' type.
+
+    Returns
+    -------
+    element_velocity_collection: numpy.ndarray
+        2D (dim, blocksize) array containing elemental velocities with
+        'float' type.
+    """
+    n_elem = node_velocity_collection.shape[1] - 1
+    element_velocity_collection = np.empty((3, n_elem))
     for k in range(n_elem):
-        vector_in_element_frame[0, k] = 0.5 * (
-            vector_in_node_frame[0, k + 1] + vector_in_node_frame[0, k]
+        element_velocity_collection[0, k] = (
+            mass[k + 1] * node_velocity_collection[0, k + 1]
+            + mass[k] * node_velocity_collection[0, k]
         )
-        vector_in_element_frame[1, k] = 0.5 * (
-            vector_in_node_frame[1, k + 1] + vector_in_node_frame[1, k]
+        element_velocity_collection[1, k] = (
+            mass[k + 1] * node_velocity_collection[1, k + 1]
+            + mass[k] * node_velocity_collection[1, k]
         )
-        vector_in_element_frame[2, k] = 0.5 * (
-            vector_in_node_frame[2, k + 1] + vector_in_node_frame[2, k]
+        element_velocity_collection[2, k] = (
+            mass[k + 1] * node_velocity_collection[2, k + 1]
+            + mass[k] * node_velocity_collection[2, k]
         )
+        element_velocity_collection[:, k] /= mass[k + 1] + mass[k]
+
+    return element_velocity_collection
+
 
-    return vector_in_element_frame
+def node_to_element_pos_or_vel(vector_in_node_frame):
+    # Remove the function beyond v0.4.0
+    raise NotImplementedError(
+        "This function is removed in v0.3.0. For node-to-element interpolation please use: \n"
+        "elastica.interaction.node_to_element_position() for rod position \n"
+        "elastica.interaction.node_to_element_velocity() for rod velocity. \n"
+        "For detail, refer to issue #80."
+    )
 
 
 @njit(cache=True)
 def slender_body_forces(
-    tangents, velocity_collection, dynamic_viscosity, lengths, radius
+    tangents, velocity_collection, dynamic_viscosity, lengths, radius, mass
 ):
     r"""
     This function computes hydrodynamic forces on a body using slender body theory.
@@ -732,6 +808,9 @@ def slender_body_forces(
     radius: numpy.ndarray
         1D (blocksize) array containing data with 'float' type.
         Rod-like object element radius.
+    mass: numpy.ndarray
+        1D (blocksize) array containing data with 'float' type.
+        Rod-like object node mass.
 
     Returns
     -------
@@ -751,7 +830,9 @@ def slender_body_forces(
 
     f = np.empty((tangents.shape[0], tangents.shape[1]))
     total_length = sum_over_elements(lengths)
-    element_velocity = node_to_element_pos_or_vel(velocity_collection)
+    element_velocity = node_to_element_velocity(
+        mass=mass, node_velocity_collection=velocity_collection
+    )
 
     for k in range(tangents.shape[1]):
         # compute the entries of t`t. a[#][#] are the the
@@ -844,6 +925,7 @@ class SlenderBodyTheory(NoForces):
             self.dynamic_viscosity,
             system.lengths,
             system.radius,
+            system.mass,
         )
         elements_to_nodes_inplace(stokes_force, system.external_forces)
 

diff --git a/tests/test_interaction.py b/tests/test_interaction.py
index 82ac01a..a7c7a84 100644
--- a/tests/test_interaction.py
+++ b/tests/test_interaction.py
@@ -8,6 +8,7 @@ from elastica.interaction import (
     InteractionPlane,
     find_slipping_elements,
     AnisotropicFrictionalPlane,
+    node_to_element_mass_or_force,
     nodes_to_elements,
     SlenderBodyTheory,
 )
@@ -48,6 +49,7 @@ class BaseRodClass(MockTestRod):
         self.internal_forces = np.zeros((MaxDimension.value(), n_elem + 1))
         self.internal_torques = np.zeros((MaxDimension.value(), n_elem))
         self.lengths = np.ones(n_elem) * base_length / n_elem
+        self.mass = np.ones(n_elem + 1)
 
     def _compute_internal_forces(self):
         return np.zeros((MaxDimension.value(), self.n_elem + 1))
@@ -365,13 +367,32 @@ class TestAuxiliaryFunctions:
         assert_allclose(correct_slip_function, slip_function, atol=Tolerance.atol())
 
     @pytest.mark.parametrize("n_elem", [2, 3, 5, 10, 20])
-    def test_nodes_to_elements(self, n_elem):
+    def test_node_to_element_mass_or_force(self, n_elem):
         random_vector = np.random.rand(3).reshape(3, 1)
         input = np.repeat(random_vector, n_elem + 1, axis=1)
         input[..., 0] *= 0.5
         input[..., -1] *= 0.5
         correct_output = np.repeat(random_vector, n_elem, axis=1)
-        output = nodes_to_elements(input)
+        output = node_to_element_mass_or_force(input)
+        assert_allclose(correct_output, output, atol=Tolerance.atol())
+        assert_allclose(np.sum(input), np.sum(output), atol=Tolerance.atol())
+
+    @pytest.mark.parametrize("n_elem", [2, 3, 5, 10, 20])
+    def test_deprecated_nodes_to_elements(self, n_elem):
+        random_vector = np.random.rand(3).reshape(3, 1)
+        input = np.repeat(random_vector, n_elem + 1, axis=1)
+        input[..., 0] *= 0.5
+        input[..., -1] *= 0.5
+        correct_output = np.repeat(random_vector, n_elem, axis=1)
+        correct_warning_message = (
+            "This function is now deprecated (issue #80). Please use "
+            "elastica.interaction.node_to_element_mass_or_force() "
+            "instead for node-to-element interpolation of mass/forces. "
+            "The function will be removed in the future (v0.3.1)."
+        )
+        with pytest.warns(DeprecationWarning) as record:
+            output = nodes_to_elements(input)
+        assert record[0].message.args[0] == correct_warning_message
         assert_allclose(correct_output, output, atol=Tolerance.atol())
         assert_allclose(np.sum(input), np.sum(output), atol=Tolerance.atol())
 
@@ -566,7 +587,7 @@ class TestAnisotropicFriction:
         )
 
         assert_allclose(correct_forces, rod.external_forces, atol=Tolerance.atol())
-        forces_on_elements = nodes_to_elements(external_forces_collection)
+        forces_on_elements = node_to_element_mass_or_force(external_forces_collection)
         correct_torques = np.zeros((3, n_elem))
         correct_torques[2] += (
             -1.0
@@ -607,7 +628,7 @@ class TestAnisotropicFriction:
         correct_forces[0] = 2.0 / 3.0 * external_forces_collection[0]
         assert_allclose(correct_forces, rod.external_forces, atol=Tolerance.atol())
 
-        forces_on_elements = nodes_to_elements(external_forces_collection)
+        forces_on_elements = node_to_element_mass_or_force(external_forces_collection)
         correct_torques = np.zeros((3, n_elem))
         correct_torques[2] += (
             -1.0
@@ -650,7 +671,7 @@ class TestAnisotropicFriction:
         ) * np.fabs(external_forces_collection[1])
         assert_allclose(correct_forces, rod.external_forces, atol=Tolerance.atol())
 
-        forces_on_elements = nodes_to_elements(external_forces_collection)
+        forces_on_elements = node_to_element_mass_or_force(external_forces_collection)
         correct_torques = np.zeros((3, n_elem))
         correct_torques[2] += (
             -1.0
@@ -736,7 +757,7 @@ class TestAnisotropicFriction:
         )
         assert_allclose(correct_forces, rod.external_forces, atol=Tolerance.atol())
 
-        forces_on_elements = nodes_to_elements(external_forces_collection)
+        forces_on_elements = node_to_element_mass_or_force(external_forces_collection)
         correct_torques = external_torques
         correct_torques[2] += -(
             np.sign(torque_mag) * np.fabs(forces_on_elements[1]) * rod.radius
@@ -748,7 +769,12 @@ class TestAnisotropicFriction:
 # Slender Body Theory Unit Tests
 
 try:
-    from elastica.interaction import sum_over_elements, node_to_element_pos_or_vel
+    from elastica.interaction import (
+        sum_over_elements,
+        node_to_element_position,
+        node_to_element_velocity,
+        node_to_element_pos_or_vel,
+    )
 
     # These functions are used in the case if Numba is available
     class TestAuxiliaryFunctionsForSlenderBodyTheory:
@@ -774,9 +800,31 @@ try:
             assert_allclose(correct_output, output, atol=Tolerance.atol())
 
         @pytest.mark.parametrize("n_elem", [2, 3, 5, 10, 20])
-        def test_node_to_elements(self, n_elem):
+        def test_node_to_element_position(self, n_elem):
             """
-            This function test node_to_element_velocity function. We are
+            This function tests node_to_element_position function. We are
+            converting node positions to element positions. Here also
+            we are using numba to speed up the process.
+
+            Parameters
+            ----------
+            n_elem
+
+            Returns
+            -------
+
+            """
+            random = np.random.rand()  # Adding some random numbers
+            input_position = random * np.ones((3, n_elem + 1))
+            correct_output = random * np.ones((3, n_elem))
+
+            output = node_to_element_position(input_position)
+            assert_allclose(correct_output, output, atol=Tolerance.atol())
+
+        @pytest.mark.parametrize("n_elem", [2, 3, 5, 10, 20])
+        def test_node_to_element_velocity(self, n_elem):
+            """
+            This function tests node_to_element_velocity function. We are
             converting node velocities to element velocities. Here also
             we are using numba to speed up the process.
 
@@ -789,12 +837,29 @@ try:
 
             """
             random = np.random.rand()  # Adding some random numbers
-            input_variable = random * np.ones((3, n_elem + 1))
+            input_velocity = random * np.ones((3, n_elem + 1))
+            input_mass = 2.0 * random * np.ones(n_elem + 1)
             correct_output = random * np.ones((3, n_elem))
 
-            output = node_to_element_pos_or_vel(input_variable)
+            output = node_to_element_velocity(
+                mass=input_mass, node_velocity_collection=input_velocity
+            )
             assert_allclose(correct_output, output, atol=Tolerance.atol())
 
+        @pytest.mark.parametrize("n_elem", [2, 3, 5, 10, 20])
+        def test_not_impl_error_for_node_to_element_pos_or_vel(self, n_elem):
+            random = np.random.rand()  # Adding some random numbers
+            input_velocity = random * np.ones((3, n_elem + 1))
+            error_message = (
+                "This function is removed in v0.3.0. For node-to-element interpolation please use: \n"
+                "elastica.interaction.node_to_element_position() for rod position \n"
+                "elastica.interaction.node_to_element_velocity() for rod velocity. \n"
+                "For detail, refer to issue #80."
+            )
+            with pytest.raises(NotImplementedError) as error_info:
+                node_to_element_pos_or_vel(input_velocity)
+            assert error_info.value.args[0] == error_message
+
 except ImportError:
     pass
 

Converting nodal velocities to element velocities
In PyElastica we store `velocity` on nodes and for some computations (i.e. rod damping, plane damping or stokes flow) we have to convert `velocity` from `nodes` to `elements`. Currently we are averaging the neigboring node velocity to compute element velocity using the following function.

https://github.com/GazzolaLab/PyElastica/blob/fee87b9da22e310ff925c16fdc839bf8405c51a4/elastica/interaction.py#L664-L703

Although this function is correct for uniform rods (uniform cross-section, element length and density) for tapered rods, momentum is not conserved since neighboring node masses are not the same. Thus, we have to first compute the total momentum of element and divide by the element mass to compute element velocity. 

**How to fix** : 

1. Use the following function to compute element velocities

``` python

def node_to_element_velocity(mass, velocity_collection):
    """
    """
    n_elem = velocity_collection.shape[1] - 1
    element_velocity = np.empty((3, n_elem))
    for k in range(n_elem):
        element_velocity[0, k] = (
            mass[k+1] * velocity_collection[0, k + 1] + mass[k] * velocity_collection[0, k]
        )
        element_velocity[1, k] = (
            mass[k+1] * velocity_collection[1, k + 1] + mass[k] * velocity_collection[1, k]
        )
        element_velocity[2, k] =(
            mass[k+1] * velocity_collection[2, k + 1] + mass[k] * velocity_collection[2, k]
        )
        element_velocity[:,k] /= (mass[k+1] + mass[k])


    return element_velocity

```

2. Rename the function `node_to_element_pos_or_vel` as `node_to_element_position`, since this will be only used to compute the element positions.
tests/test_interaction.py::TestInteractionPlane::test_interaction_without_contact[2] tests/test_interaction.py::TestInteractionPlane::test_interaction_without_contact[3] tests/test_interaction.py::TestInteractionPlane::test_interaction_without_contact[5] tests/test_interaction.py::TestInteractionPlane::test_interaction_without_contact[10] tests/test_interaction.py::TestInteractionPlane::test_interaction_without_contact[20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_and_nu[2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_and_nu[3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_and_nu[5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_and_nu[10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_and_nu[20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.1-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.1-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.1-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.1-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.1-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.5-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.5-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.5-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.5-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[0.5-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[1.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[1.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[1.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[1.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[1.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[2-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[2-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[2-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[2-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[2-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[10-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[10-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[10-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[10-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_with_k_without_nu[10-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[0.5-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[0.5-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[0.5-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[0.5-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[0.5-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[1.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[1.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[1.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[1.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[1.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[5.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[5.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[5.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[5.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[5.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[7.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[7.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[7.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[7.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[7.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[12.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[12.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[12.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[12.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_plane_without_k_with_nu[12.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane[2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane[3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane[5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane[10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane[20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.1-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.1-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.1-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.1-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.1-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.5-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.5-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.5-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.5-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[0.5-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[1.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[1.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[1.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[1.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[1.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[2-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[2-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[2-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[2-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[2-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[10-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[10-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[10-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[10-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_with_k_without_nu[10-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[0.5-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[0.5-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[0.5-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[0.5-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[0.5-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[1.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[1.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[1.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[1.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[1.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[5.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[5.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[5.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[5.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[5.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[7.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[7.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[7.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[7.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[7.0-20] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[12.0-2] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[12.0-3] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[12.0-5] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[12.0-10] tests/test_interaction.py::TestInteractionPlane::test_interaction_when_rod_is_under_plane_without_k_with_nu[12.0-20] tests/test_interaction.py::TestAuxiliaryFunctions::test_linear_interpolation_slip[2] tests/test_interaction.py::TestAuxiliaryFunctions::test_linear_interpolation_slip[3] tests/test_interaction.py::TestAuxiliaryFunctions::test_linear_interpolation_slip[5] tests/test_interaction.py::TestAuxiliaryFunctions::test_linear_interpolation_slip[10] tests/test_interaction.py::TestAuxiliaryFunctions::test_linear_interpolation_slip[20] tests/test_interaction.py::TestAuxiliaryFunctions::test_node_to_element_mass_or_force[2] tests/test_interaction.py::TestAuxiliaryFunctions::test_node_to_element_mass_or_force[3] tests/test_interaction.py::TestAuxiliaryFunctions::test_node_to_element_mass_or_force[5] tests/test_interaction.py::TestAuxiliaryFunctions::test_node_to_element_mass_or_force[10] tests/test_interaction.py::TestAuxiliaryFunctions::test_node_to_element_mass_or_force[20] tests/test_interaction.py::TestAuxiliaryFunctions::test_deprecated_nodes_to_elements[2] tests/test_interaction.py::TestAuxiliaryFunctions::test_deprecated_nodes_to_elements[3] tests/test_interaction.py::TestAuxiliaryFunctions::test_deprecated_nodes_to_elements[5] tests/test_interaction.py::TestAuxiliaryFunctions::test_deprecated_nodes_to_elements[10] tests/test_interaction.py::TestAuxiliaryFunctions::test_deprecated_nodes_to_elements[20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-3.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-3.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[-3.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[2.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[2.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[2.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_kinetic_friction[2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-3.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-3.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[-3.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[2.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[2.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[2.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_smaller_than_static_friction_force[2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-20.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-20.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-20.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-20.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-20.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-15.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-15.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-15.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-15.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[-15.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[15.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[15.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[15.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[15.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[15.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[20.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[20.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[20.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[20.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_axial_static_friction_total_force_larger_than_static_friction_force[20.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--3.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--3.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0--3.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-2.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-2.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-2.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-5.0-5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--3.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--3.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0--3.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-2.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-2.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-2.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[-2.0-5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--3.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--3.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0--3.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-2.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-2.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-2.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[0.0-5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--1.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0--3.0-5] 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tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[4.0-5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0--1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0--1.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0--1.0-5] 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tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-1.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-1.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-2.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-2.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-2.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-2.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_kinetic_rolling_friction[6.0-5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-20.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-20.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-20.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-20.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-20.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-15.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-15.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-15.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-15.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[-15.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[15.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[15.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[15.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[15.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[15.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[20.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[20.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[20.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[20.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_smaller_than_static_friction_force[20.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-100.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-100.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-100.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-100.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-100.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-80.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-80.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-80.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-80.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[-80.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[65.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[65.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[65.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[65.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[65.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[95.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[95.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[95.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[95.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_force_larger_than_static_friction_force[95.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-3.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-3.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-3.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-3.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-3.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-1.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[-1.0-3] 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tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[2.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[3.5-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[3.5-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[3.5-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[3.5-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_smaller_than_static_friction_force[3.5-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-10.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-10.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-10.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-10.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-10.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-5.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-5.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-5.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-5.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[-5.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[6.0-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[6.0-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[6.0-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[6.0-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[6.0-20] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[7.5-2] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[7.5-3] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[7.5-5] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[7.5-10] tests/test_interaction.py::TestAnisotropicFriction::test_static_rolling_friction_total_torque_larger_than_static_friction_force[7.5-20] tests/test_interaction.py::TestAuxiliaryFunctionsForSlenderBodyTheory::test_sum_over_elements[2] tests/test_interaction.py::TestAuxiliaryFunctionsForSlenderBodyTheory::test_sum_over_elements[3] tests/test_interaction.py::TestAuxiliaryFunctionsForSlenderBodyTheory::test_sum_over_elements[5] 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