Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › LS DYNA Simulation where both impactor and target are ALE [HELP REQUEST] › Reply To: LS DYNA Simulation where both impactor and target are ALE [HELP REQUEST]
July 25, 2024 at 2:16 pm
Ian Do
Ansys Employee
Hi Jash,
ELFORM=5 is obsolete. Please use ELFORM=11. And you must provide the extra empty ALE space around the mat that is deforming. This space can be filled with air or mat_vacuum. Before using ALE, it would save time if you can review the ALE class on ANSYS Learning Hub (ALH). There are may examples available there also. What you see is likely the result of locally very strong force combining with large dt that invert the elm. You may need to look at tuning either one or both.
Regards,
Ian Do