Reply To: Radial displacement

[peteroznewman]

By default, applied forces do not change direction when the node rotates around an axis. In a nonlinear analysis with Large Deflection On and the nodes in a rectangular coordinate system, if the force is in the X direction, and the node rotates by 90 degrees, the force will still be in the X direction.  I’m not sure what happens in a cylindrical system. Though the X direction is radial, I think the radial direction is determined from the initial location of the node and does not rotate with the node. Maybe your model is demonstrating that behavior.

It is possible to enable a Follower Force that does rotate with the node.  Here is a discussion that explains how to do that. /forum/forums/topic/how-we-can-apply-a-follower-load-or-nonconservative-force-in-ansys/  Another discussion points to the Ansys Help Page. /forum/forums/topic/non-conservative-follower-force/  To open the URL in that discussion, first start Ansys Help, then copy that URL from that discussion and paste it into the address bar of the browser running Ansys Help.

Note that Pressure loads, by default, always follow the rotations of the element faces that they are applied to. The pressure is always normal to the element face. No code is needed for the pressure to follow the rotation of the element.