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Ansys / LS-DYNA Help Forum
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November 5, 2024 8:41 pm
Hello,
I am running an explicit simulation with a crushable foam material.
I tweaked the explicit solver settings up and down but the results are not good. The force is osciallating strongly:
I can be seen in the animated gif whats happening. The foam is "collpasing" strangely. I also ran implicit, however i do not fully trust the implicit results, although they are smooth.
Does anyone have a suggestion?
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November 6, 2024 2:14 am
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 compression point for the mesh. Have you tried rotating your foam 45 degrees so you don’t have that vertical seam in the direct load path?