FigureĀ 6-1 shows the uniform thickness doubly curved laminated shell having an orthogonal curvilinear coordinate system (
![](images/sme_ug_layered_shell.09.03.2.png)
) and a total thickness (
d).
A typical stacking sequence of a composite laminate having n layers is shown in
FigureĀ 6-2. The thickness of each layer (
![](images/sme_ug_layered_shell.09.03.3.png)
), as well as the fiber direction in each layer (
![](images/sme_ug_layered_shell.09.03.4.png)
) with respect to first principal direction (
![](images/sme_ug_layered_shell.09.03.5.png)
) of the laminate are indicated. A counterclockwise rotation of the fiber direction with respect to (
![](images/sme_ug_layered_shell.09.03.6.png)
) direction is considered as positive.
![](images/sme_ug_layered_shell.09.03.7.png)