hi everybody,
i am working with ansys and trying to madel a composite tube i have chosen element "solid 46" the first problem i faced is in the "material model" "orthotropic material" i am working with 2d composite materials (plane stress) (i have Ex Ey Gxy)
in ansys for an orthotropic material we need to fill also Ez Gxz Gzy wich we dont have in plane stress .
also what system of coordinates should i use cartesian or cylindrical.
and for the mesh is it importsnt the kind of mesh or i can choose betwwn free and mapped.