14.2 User subroutine to specify mesh motion constraints during adaptive meshing

Product: ABAQUS/Standard

Benefits: This subroutine allows you to define adaptive mesh constraints in directions relative to surface normals and based on solution variables.

Description: User subroutine UMESHMOTION can be used to define adaptive mesh constraint displacements or velocities according to general solution-dependent criteria. The user subroutine has particular value in describing surface wear or ablation. Utility routines GETVRN, GETNODETOELEMCONN, and GETVRMAVGATNODE can be used to access solution results at the node where the constraint is applied.

References:

ABAQUS Analysis User's Manual

“Adaptive meshing: overview,” Section 7.17.1
“Defining adaptive mesh domains in ABAQUS/Standard,” Section 7.17.6
“Adaptive meshing and remapping in ABAQUS/Standard,” Section 7.17.7
“UMESHMOTION,” Section 25.2.32
“Obtaining material point information averaged at a node,” Section 26.2.6
“Obtaining node point information,” Section 26.2.7
“Obtaining node to element connectivity,” Section 26.2.8

ABAQUS Keywords Reference Manual

*ADAPTIVE MESH
*ADAPTIVE MESH CONSTRAINT

ABAQUS Verification Manual

“Adaptive mesh for solid elements in ABAQUS/Standard,” Section 5.1.1