mpacts.contact.models.collision. dmt

In order to be able to use this module import it like this:

import mpacts.contact.models.collision.dmt
#or assign it to a shorter name
import mpacts.contact.models.collision.dmt as dmt

DMT

Description: DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area Geometry combinations available:

PC2 | PC1 - Sphere Rigid_Triangle Rigid_Sphere Rigid_RoundedTriangle Rigid_Quad Rigid_CylinderTop Rigid_CylinderBottom Rigid_Cylinder Rigid_Cone Rigid_Capsule Deformable_Triangle Deformable_RoundedTriangle Deformable_Line Deformable_Capsule
Sphere YES YES YES YES YES YES YES YES YES YES YES YES YES YES

DMT (Deformable_Capsule Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataDeformable_Cylinder_1_DataCapsule_SphereN_DMTAssembleForces_2AssembleForces_DeformableCylinder_1Feedback

DMT (Deformable_Line Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Optional keywords:
    • orthogonal_to (default value = 0 0 1) — Direction ‘out of plane’ for the 2D system. Default = (0,0,1).
    • reject_larger_radius (default value = 1) — If true, overlaps larger than the sphere’s radius will be rejected’
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataDeformable_Line_1_DataLine_SphereN_DMTAssembleForces_2AssembleForces_DeformableCylinder_1Feedback

DMT (Deformable_RoundedTriangle Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Optional keywords:
    • abort_if_different (default value = 0) — If ‘True’, inverts the regular function of ‘AbortIfSameParent’, and makes the contact model early abort if the particles’ parents are different. Please do not change this ‘Property’ if you are not sure what you are doing.
    • disable_warning_fake_rounded_triangle (default value = 0) — Disables the printing of the specified warning message.
    • flip_normals (default value = 0) — Optionally flip normals if sphere is more than its radius submerged. In most cases, we recommend that you leave this option to its default ‘false’.
    • reject_large_overlap (default value = 1) — Optionally reject overlaps reject_overlap_r times larger than the radius. Unless you have a fully concave ‘container’ geometry, we recommend that you leave this value to its default ‘true’.
    • reject_overlap_r (default value = 1) — If reject_large_overlap is True, this specifies the number of sphere radii of overlap that should be rejected (Default=1).
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataDeformable_NGon_1_Data  <3 >
  ↓
NGon_SphereWarningMessage  <WARN::FakeRoundedTriangle >
  ↓
N_DMTAssembleForces_DeformableTriangleBarycentric_1AssembleForces_2AbortIfSameParentFeedback

DMT (Deformable_Triangle Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Optional keywords:
    • abort_if_different (default value = 0) — If ‘True’, inverts the regular function of ‘AbortIfSameParent’, and makes the contact model early abort if the particles’ parents are different. Please do not change this ‘Property’ if you are not sure what you are doing.
    • flip_normals (default value = 0) — Optionally flip normals if sphere is more than its radius submerged. In most cases, we recommend that you leave this option to its default ‘false’.
    • reject_large_overlap (default value = 1) — Optionally reject overlaps reject_overlap_r times larger than the radius. Unless you have a fully concave ‘container’ geometry, we recommend that you leave this value to its default ‘true’.
    • reject_overlap_r (default value = 1) — If reject_large_overlap is True, this specifies the number of sphere radii of overlap that should be rejected (Default=1).
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataDeformable_NGon_1_Data  <3 >
  ↓
NGon_SphereN_DMTAssembleForces_DeformableTriangleBarycentric_1AssembleForces_2AbortIfSameParentFeedback

DMT (Rigid_Capsule Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_Cylinder_1_DataCylinder_SphereN_DMTAssembleForcesFeedback

DMT (Rigid_Cone Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_Cone_1_DataCone_SphereN_DMTAssembleForcesFeedback

DMT (Rigid_Cylinder Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_Cylinder_1_DataCylinder_SphereN_DMTAssembleForcesFeedback

DMT (Rigid_CylinderBottom Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_Cylinder_1_DataDisk_Sphere  <Bottom_Selector >
  ↓
N_DMTAssembleForcesFeedback

DMT (Rigid_CylinderTop Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_Cylinder_1_DataDisk_Sphere  <Top_Selector >
  ↓
N_DMTAssembleForcesFeedback

DMT (Rigid_Quad Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Optional keywords:
    • flip_normals (default value = 0) — Optionally flip normals if sphere is more than its radius submerged. In most cases, we recommend that you leave this option to its default ‘false’.
    • reject_large_overlap (default value = 1) — Optionally reject overlaps reject_overlap_r times larger than the radius. Unless you have a fully concave ‘container’ geometry, we recommend that you leave this value to its default ‘true’.
    • reject_overlap_r (default value = 1) — If reject_large_overlap is True, this specifies the number of sphere radii of overlap that should be rejected (Default=1).
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_NGon_1_Data  <4 >
  ↓
NGon_SphereN_DMTAssembleForcesFeedback

DMT (Rigid_RoundedTriangle Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Optional keywords:
    • disable_warning_fake_rounded_triangle (default value = 0) — Disables the printing of the specified warning message.
    • flip_normals (default value = 0) — Optionally flip normals if sphere is more than its radius submerged. In most cases, we recommend that you leave this option to its default ‘false’.
    • reject_large_overlap (default value = 1) — Optionally reject overlaps reject_overlap_r times larger than the radius. Unless you have a fully concave ‘container’ geometry, we recommend that you leave this value to its default ‘true’.
    • reject_overlap_r (default value = 1) — If reject_large_overlap is True, this specifies the number of sphere radii of overlap that should be rejected (Default=1).
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_NGon_1_Data  <3 >
  ↓
NGon_SphereWarningMessage  <WARN::FakeRoundedTriangle >
  ↓
N_DMTAssembleForcesFeedback

DMT (Rigid_Sphere Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigidSphere_1_DataSphere_SphereN_DMTAssembleForcesFeedback

DMT (Rigid_Triangle Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Optional keywords:
    • flip_normals (default value = 0) — Optionally flip normals if sphere is more than its radius submerged. In most cases, we recommend that you leave this option to its default ‘false’.
    • reject_large_overlap (default value = 1) — Optionally reject overlaps reject_overlap_r times larger than the radius. Unless you have a fully concave ‘container’ geometry, we recommend that you leave this value to its default ‘true’.
    • reject_overlap_r (default value = 1) — If reject_large_overlap is True, this specifies the number of sphere radii of overlap that should be rejected (Default=1).
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataRigid_NGon_1_Data  <3 >
  ↓
NGon_SphereN_DMTAssembleForcesFeedback

DMT (Sphere Sphere)

DMT model for contact between repulsive adhesive spheres. Basically just Hertz with constant adhesion energy / area

Parallel Compatible: Yes

Properties:

  • Required keywords:
    • E1 (kg . m^-1 . s^-2) — Young modulus material 1.
    • E2 (kg . m^-1 . s^-2) — Young modulus material 2.
    • attrConst (kg . s^-2) — Adhesion energy between two particles
    • nu1 (1) — Poisson ratio material 1.
    • nu2 (1) — Poisson ratio material 2.
    • pc1 — The first particle container in the binary contact detection.
    • pc2 — The second particle container in the binary contact detection. If contact detection within the same particle container is desired, and it is applicable for the contactmodel, pass the same pc to both pc1 and pc2.
  • Read only properties:
    • Ehat — Combined (effective) elastic modulus

This contact model is composed out of following pieces (click on the chain elements to get more information):

DefaultBoilerPlateSphere0_2_DataSphere0_1_DataSphere_SphereN_DMTAssembleForcesFeedback