Learning Forum

[b23040001]

Could anyone tell me what might be the reason for the penetration of the rigid sphere (*MAT_020) when compressing the compressible foam material (*MAT_063) (as shown in first Figure)? The contact settings are depicted in the second figure, and self-contact has also been set.

[Dennis Chen]

try using contact_automatic_surface_to_surface_offset and change the SAST and SBST with a negative number to represent the "search range".    Interestingly enough, ansys workbench ls-dyna automatically outputs contact in this format and with the correct setting so this kind of problem doesn't happen. :)

[b23040001]

Thank you very much, Dennis! Let me try the way you suggested.