Investigation of anisotropic reinforcement patch corners

Corners at symmetrically attached reinforcement patches of in-plane loaded laminate plates constitute a source for stress localizations. The mechanical in-plane fields of such stress localizations are obtained by means of the boundary finite element method (BFEM). Corresponding in-plane investigations provide the singular in-plane force exponents and their displacement modes characterizing the corner situation. Due to the availability of the in-plane fields in a semi-analytical way their gradients are readily evaluated then. The interlaminar stresses inside the plate are retrieved by equilibrium considerations on a ply-by-ply basis.