Interesting. Yeah your units did look consistent though so I don't believe that was the issue. So now your simulation is outputting internal energy?

Sorry @richardp I meant to follow up on this. I saw you marked this topic as complete, did you resolve your issue?

I believe you can try *Boundary_prescribed_motion_rigid_local and make the edges of your part rigid and reference your local coordinate system in the ...

So the easiest error to debug is that part ID 2 has rigid nodes somewhere. I assume the part material isn't rigid, but maybe you have some CNRB or nod...

Gotcha. So you were able to solve your problem using *Boundary_prescribed_motion_rigid? Or do you also need to change your CNRB to constrained extra n...

Hmm kind of looks like the elements are hourglassing. What solid element formulation/hourglass control is your foam? It’s also a bit of a weird compre...

Okay so you have the rotation working correctly and now you just need to be able to extract the reaction moment? If that's the case, do you have the *...

There's a couple options for applying rotation to CNRB nodes in LS-DYNA explicit analysis: *BOUNDARY_PRESCRIBED_MOTION_RIGID instead of _NODE: ...

Can you provide more details on your simulation setup and your expected result? Quite a lot of things could be affecting the peak force of your sim.

If you internal energy is zero then there's something wrong with you model setup. My theory is that your units are messed up. What unit system are you...

To follow up for anyone else who might stumble upon this: Main areas of problems seems to be: Contact issue Material issue Occurs more ofte...

Also, make sure your version of LS-PrePost supports the version of LS-Dyna that you are running. The can be tricky when running newer revisions, espec...

Can you provide an image example of this? And an application? Is it corrugated?

When a surface appears grey like that when trying to volume mesh, it's because it's not enclosed. You've got quite a lot of fixed points showing which...

Hi @leibhussar let me try to help answer your questions: The immediate failure at low strains typically occurs because: The high value of C (...