Analysis of Sandwich Panel as a 2-D Orthotropic Thick Plate Continuum

摘要

The flexural behavior of a three-dimensional truss-core sandwich panel may be represented by an equivalent two-dimensional homogeneous but orthotropic thick plate. For the transformation, seven equivalent elastic consstants have been derived and these are provided in the paper. In this manner, the 3-D truss-core sandwich panel can be studied using 2-D theoretical and numerical methods. Closed-form solutions of the 2-D orthotropic thick plate are developed in this paper for two different boundary conditions; (a) clamped at all edges and (b) simply-supported at two opposite edges but free at the other two edges. Comparison of response by closed-form solution and finite element analysis showed consistently good agreement.