Calculating Reserve Factor for Tsai-Wu 3D with continuum shell elements

User: "Felix Lentz_21924"
Altair Community Member
Updated by Felix Lentz_21924

Hi,

I would like to do a comparison of differend 3D failure criteria for continuum shell elements in Optistruct. Therefore I need to calculate something like the reserve factor or strength ratio for the different failure criteria, because Failure Index can't be compared between different failure theories.

For shell elements I could either us SRCOMPS or calculate it with derived math as shown hear(https://community.altair.com/community?id=community_question&sys_id=f496407a1b2bd0908017dc61ec4bcb7d)

Is there a similar option for 3D Elements, because both don't seems to work for 3D Elements.

Best Regards,
Felix Lentz

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