Error in Dynamic Crash Analysis of SAE Baja Roll Cage

Altair Community Member

Jun 28, 2021

Updated Jul 2, 2021 by PRASHANT JHA

Hello Everyone,

I am trying to do a dynamic frontal crash analysis of SAE Baja Roll Cage. I want to crash by roll cage with a rigid wall at the front. When I run the solver, it gives the error named 'Error in Interface Definition' describing 'Lagrange Surface is Empty'. I checked the master & slave entities, it was all fine, red dots on a blue background. As in mine case, the master & slave entities would be roll cage components only. But what does this term 'Lagrange Surface is Empty' mean? And how to rectify this?

Please someone help me out. Any help would of great use to me.

I have attached the screen shots of the errors.

Also I have attached mine .hm model.

Please have a look into and reply.