FigureĀ 6-1 shows the uniform thickness doubly curved laminated shell having an orthogonal curvilinear coordinate system (
) 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 (
), as well as the fiber direction in each layer (
) with respect to first principal direction (
) of the laminate are indicated. A counterclockwise rotation of the fiber direction with respect to (
) direction is considered as positive.