Getting NaN values for material laminates with cores.

[Mohamed Hetta]

Hey guys,

Trying to create a laminate made out of 2-Orth. plies and an iso core results in NaN value for the properties. Currently using 3.46.0, I think this is a bug as it wasn't the case in earlier version.

[Rob McDonald]

3.46.0 introduced a new variant of lamination theory.  The new theory can calculate the 3d through-laminate material properties.

However, this means that you need to supply information for all directions of material properties (or use orthotropic with transverse isotropy to figure them out).

I suspect you have some material properties set to zero.  Before, they were ignored, but now they're probably resulting in a divide by zero somewhere.

If that isn't the case, please post an elementary example that I can use to debug.

Rob