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Composite Materials

Level 1

Composite Materials

We are trying to enter properties for a transversely orthotropic material to simulate a plate made of composite materials. The condition that must be met is a positive definite determinant for the stiffness matrix (no negative strain energy). We have verified that our values meet this yet Mechanica still replies that our values are invalid. It appears to be an apparent bug in Mechanica. We would like to find out if anyone else has run into this problem.

Mechanica 2001 2003070

Thanks,

Greg Kemner