Numerical analysis of the effects of wrinkles in the radius of curvature of L-shaped CFRP specimens on unfolding failure

Complex composite parts, and especially curved laminated composites, are more subject to defects than flat laminates. One of the most common is presence wrinkles, which can occur in radius curvature. Wrinkle effects must be studied evaluate their influence on mechanical properties composites. In this study, a numerical model was developed take wrinkle local delamination into consideration assess impact failure load L-angle specimens under four-point bending tests. Experimental wrinkles based previous work were modelled using Discrete Ply Model strategy simulations run. The allowed each defect (local wrinkle) distinguished combined with respect maximum misalignment.