I am trying to modeled un-symmetric pressure vessel with external pressure.
I wish to apply a rigid body motion boundary condition on one of the body surface.
I pick three node on the Z plane of the body and apply the following BC:
- The displacements in three axes (x,y,z) is equal to zero at the first one node.
- The displacements in two axes (y,z) is equal to zero at the second node. where the axis between the first and the second node is the x axis.
- The displacement in the z axis is equal to zero at the third node.
I run the analysis but I got a singular point in the three nodes.
Who can I apply a rigid body motion boundary condition for a un-symmetric body in SimScale?