Investigation on the compressive damage mechanisms of 3D woven composites considering stochastic fiber initial misalignment

This paper investigates the compressive damage mechanisms of 3D woven composites through a coupled numerical-experimental approach. A comprehensive progressive damage model, capable of characterizing the fiber kinking failure, transverse inter-fiber crack, matrix damage and interfacial debonding, is developed to capture the damage accumulations by incorporating a novel fracture angle-dependent stress reduction scheme, and the numerical...