Loads
RBE2 & RBE3 discrete ties can be used by modifying already generated remote loads.
To change a remote load to a load distributed by a RBE2 or RBE3 element the following commands can be added to the Advanced User Settings:
boundaryCondition.ModelLoadEvent_Force_1_Force.tyingMode=RBE2 boundaryCondition.ModelLoadEvent_Force_2_Force.tyingMode=RBE3 |
Force_1 & Force_2 have to be replaced with the names of the change desired loads.
Displacement Constraints / Rotational degrees of freedom
Displacement constraints can also be created with RBE2 elements. Thus, rotational degrees of freedom can be unconstrained.
Therefore, a dummy remote load has to be created with a load value. The dummy load can then be modified to a displacement constraint with a RBE2 element with the following commands. Unconstraint directions or rotations are left free to enable rotation. Ideally, the dummy load is applied in a direction of a translational displacement constraint so that the dummy load is without influence.
boundaryCondition.ModelLoadEvent_Force_1_Force.tyingMode=RBE2 |
Force_1 has to be replaced with the name of the change desired load to a displacement constraint.
Displacement constraints can only be applied with RBE2 elements and not with RBE3 elements. Displacement constraints on RBE3 elements make the FE matrix unsolvable.
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