Three-dimensional exact analysis of angle-ply laminates in cylindrical bending with interfacial damage via state-space method

A simply supported angle-ply laminate with interfacial damage in cylindrical bending is investigated directly based on the three-dimensional theory of elasticity. The state-space method that has particular superiority in laminated structural analyses is employed. The general spring-layer model is adopted to describe the interfaces with damage. A special but direct treatment of the conditions at interfaces is conducted that a so-called interfacial transfer matrix is introduced in the state-space formulations to accomplish the analysis. Numerical investigation on bending and free vibration problems is finally performed to show the effectiveness of the present method.