RBE2 / RBE3 Discrete Ties & Rotational degrees of freedom
- SHK (Unlicensed)
- Manuel Ott
- Lennart Krueger
Loads
By default all remote loads are distributed with a RBE3 element. To change a remote load to a load distribution with a RBE2 element the following command can be added to the Advanced User Settings:
connector.ModelLoadEvent_Force_1_Force.type=RBE2 |
Force_1 has to be replaced with the name of the change desired load.
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.
connector.ModelLoadEvent_Force_2_Force.type=RBE2 |
Force_2 has to be replaced with the name of the change desired load to a displacement constraint.
Limitations:
The GUI does not support rotational degrees of freedom yet. The optimisation must be executed in the command line.
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