Jump to content

Compression only elements

Recommended Posts


I'm tring to model a semplified 2D pin element using RBE and CBAR with rotational dof release along the normal to plane.

Due to geometrical and load condition the RBE express a tension/compression on dipendent nodes.

my question is: si possible using an element (such as rbe) that is rigid in compression and not rigid (deactivated?) in traction?



Share this post

Link to post
Share on other sites



I digged a bit deeper into it and maybe this can be useful.

So if I am not wrong on this, first thing for this to work is, that you have a non-linear subcase (non linear static for example) with a NLPARM card.


I went into some problems when defining the stiffnes to be completely zero for tension, but that seems to be a model issue only related to the simple example.


I attached the modified .fem file for future reference (also for mysel if I want to look it up again ;) )


Have a nice day!


Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

You are posting as a guest. If you have an account, please sign in.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...