Transient analysis of composite sandwich plates using assumed strain plate bending elements based on Reddy's higher order theory

摘要

Two new C° assumed strain finite element formulations of Reddy's higher order theory are used to determine the transient response of layered anisotropic composite and sandwich plates. The material properties that are typical of glass fiber polyester resins for skin and HEREX C70.130 PVC foam material for the core are used to show the parametric effects of boundary conditions, length to thickness ratio on the dynamic responses. A consistent mass matrix is adopted in the present formulation. The Newmark direct integration scheme is used to predict the transient response of layered composites. The results presented in this investigation should be useful in better understanding the transient response of composite sandwich plates and potentially beneficial for designers of sandwich structures.