Learning Forum

[ChrisD]

This seems like it should be such an easy thing to do, but I can't figure it out.  Imagine that you have a thick cylinder with solid elements.  I'd like to allow it to expand radially about it's fixed centerline, to simulate internal pressure.  I'd also like to be able to apply a force to one end of the cylinder to produce a longitudinal stress.  So I somehow have to fix the annular area on the other end so that the nodes in that plane  can expand radially, but be fixed in the z-direction, assuming the centerline runs along the z-axis.  But everything I try leads to rigid body motion because the cylinder can either float or rotate in the xy plane.  Any suggestions would be most appreciated.  (PS, I know I can do this axisymmetrically, but I may have a holes or other features that kill symmetry).

Thank you!

Chris

[Gary Stofan]

Try a Remote Displacement referenced to a Coordinate System located at the center of the cylinder
A Remote Displacement can be used as a support to fix (0) or allow (free) movement in X,Y,Z and RotX, RotY, RotZ.