Learning Forum

[m.caragiuli]

Hi,

I need to constrain an assembly to prevent any rigid body motion. It consists of the bodies highlighted in different colours. Other bodies not displayed in the picture are in contact with the yellow body on the inferior side. I want to apply a fixed support to this assembly. The idea is to scope the top faces of the displayed bodies, but would it be sufficient to prevent any motion? Should I scope the whole bodies instead?

[Rahul Kumbhar]

If you apply 'Fixed support'on the faces, it should be sufficient to stop rigid body motion. But depending upon the loads and material properties, if the material deforms a lot, then it can give element distortion.n

[m.caragiuli]

ok thanks. By applying the fixed support on the entire bodies will it be an overconstraint?n

[Rahul Kumbhar]

I am not sure. It depends upon your boundary condition. Sorry if my previous reply created confusion. I meant if you just select one face for fixed support, that should be sufficient.n

[m.caragiuli]

Please note that the depicted bodies are flexible and a shared topology has been used to create a conformal mesh, thus they are bonded together. However, I think I should constrain the top surface of each of them, not just one, despite the present bond. Am I wrong?nMany thanks for your reply. n

[Rahul Kumbhar]

yes, you should select top surface of each of themn

[m.caragiuli]

Ok thanks. n