One explains in section II.1.9.2 how the plies stresses and strains calculation can be significantly accelerated by calculating once and for all intermediate acceleration matrices for each ply. These matrices must be recalculated each time the laminate or one of its materials is modified.
Method “reInitAllPliesAccelMatrices” has been added to the “ClaLam” class to re-initialize the laminate plies acceleration matrices. This ensures that the matrices will be re-calculated next time they are required.