The following is a non-exhaustive list of known limitations:
When a mechanical loading is applied to a laminate, it is characterized by an angle defining the orientation of the loading with respect to the laminate. The loading angle follows the same conventions as the ply angle shown in Figure II.1.2. This convention for the loading angle may differ from those used in other software. For example, ESAComp appears to define the loading angle as the angle of the laminate with respect to the loading direction, resulting in a sign change for the corresponding angle.
As the composite classes are still under development, the programming interface of the composite-related functions may still change.