XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX''"> Isotropic, Orthotropic and Anisotropic Materials
About Isotropic, Orthotropic and Anisotropic materials:
Anisotropic is the most general case, the cross-direction terms have the following meaning.
where
For orthotropic materials:
For isotropic materials:
and
; 
; 
