Three-dimensional analysis of multi-layer composite plates of arbitrary shape and boundary conditions with shear slip interfaces

摘要

An accurate semi-analytical method for three-dimensional static analysis of composite plates consisting of several anisotropic layers with shear slip imperfection is presented. The geometry and boundary conditions of the composite plate are arbitrary. At given interfaces, the imperfections are modeled via linear springs. The in-plane displacements are represented by appropriate expressions such that their discontinuity across the interfaces is incorporated accordingly. Also, the out-of-plane displacement normal to the interface must be continuous while the out-of-plane normal strain is discontinuous across the interface. In this approach, the essential boundary conditions are satisfied exactly, and the continuity of the inter-layer traction is captured with high accuracy.