Numerical investigation on thermoelastic bending of sandwich plates with porous FGM layer

Abstract

Abstract Porous Sandwich plates are finding increased use in many engineering applications including construction and shipbuilding industries. In recent decades, the laminated plates have much attractive because of the introduction of advanced composite materials such as functionally graded materials (FGMs). This material in which its characteristics are smoothly transient through certain dimensions can overcome many problems encountered in conventional laminated stacking composites, e.g., the inter-laminar stress discontinuity occurred by the mismatches in the characteristics of two distinct laminated layers. This study explores thermal elasto bending of FGM sandwich plates by using IGA (isogeometric analysis) method which be able to easily perform both the smoothness of higher-order distribution, the precise and cost-efficient in modelling of the geometries. A trigonometric higher shear deformable plate theory, which can take the thickness effects into account, is established with the zig-zag formulation to describe the continuity requirement based on the non-uniform rational B-spline (NURBS)-based IGA. Benchmark problems on the thermoelastic bending responses of FGM sandwich plates have been tested, and the results are validated to the reference problems reported in the open literature to evidence the analysis capability of the proposed IGA method. Additional parameter study highlight the impacts of the composition patterns, ingredient variation, plate geometric coefficient and thermal load type on the thermoelastic flexural behaviors.