The stiffness and compliance matrices can also be written in
a normalized form where 
is the laminate thickness. The
normalized stiffness matrices ABD
* are:
In-plane stiffness matrix:
Coupling matrix:
Flexural stiffness matrix:
Out-of-plane shear matrix:
And the normalized compliance matrices abd * are:
In-plane compliance matrix:
Coupling matrix:
Flexural compliance matrix:
.Out-of-plane shear matrix:
