Wenlong
Ansys Employee

Hi,


Sometime when the model gets complex with joints and ends up with rigid body motion, it may be a good idea to conduct a Modal analysis to check what rigid body motion you have. This can help you quickly identify the cause of the problem. 


A related Modal analysis can be easily done by dragging a Modal Analysis system to the "model" of the Static Analysis so that you don't need to define these joints again. 



Regards,


Wenlong