lucariga 0 Report post Posted January 16 Hi, 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? Quote Share this post Link to post Share on other sites
Rahul R 316 Report post Posted January 17 Try PBUSD1D of type SPRING . You can specify different tables for spring stiffness in tension and/or compression. And specify very high stiffness for compression. Hyperman likes this Quote Share this post Link to post Share on other sites
lucariga 0 Report post Posted January 17 Hi Rahul, I'm a new user on Altair, could you provide a simple example (a model) of this method? thanks Quote Share this post Link to post Share on other sites
Rahul R 316 Report post Posted January 18 Please refer attached fem deck to get idea. PBUSH compression and tension.fem Quote Share this post Link to post Share on other sites
