Products: ABAQUS/Standard ABAQUS/CAE
Benefits: You can now apply adaptive mesh constraints to a node in user subroutine UMESHMOTION while also allowing mesh smoothing to operate on the node. This enhancement is particularly useful when modeling surface ablation or deposition effects, where the adaptive mesh constraint motion will typically act orthogonal to mesh smoothing node motions.
Description: A new subroutine argument, LSMOOTH, is added to UMESHMOTION. If you do not define this variable or if you set LSMOOTH=0, ABAQUS/Standard acts as before, applying your mesh constraint but ignoring the constrained node when smoothing during mesh sweeps.
When you set LSMOOTH=1, ABAQUS/Standard moves the constrained node when smoothing during mesh sweeps. If you use UMESHMOTION to prescribe the motion of a surface node normal to that surface, the subsequent mesh smoothing acts tangentially on surface nodes and has little impact on your prescribed normal motion. In other general cases setting LSMOOTH=1 causes mesh smoothing to violate your mesh constraint.
Step module: OtherAdaptive Mesh Constraint
