Homogenization of sandwich panels

Abstract

The numerical modeling of plates with periodic corrugationrequires some efforts to be made in terms ofcareful and precise discretization of the complicated structure. This automatically generates very com-putationally expensive models. One of the most popular methods of model simplification is analytical ornumerical homogenization. The main goal of this paper is to present the homogenization techniques thatcan be used to effectively model sandwich panels such as corrugated plates in an elastic phase. Two meth-ods of different complexity are described: homogenization through application of the classical laminatedplate theory and homogenization through the deformation energy-equivalence method. The accuracy ofthese methods is compared with the literature data and the results of a structural sample in two basictests, i.e., the four-point bending test and the uniaxial tensile test. The results show that each methodprovides similar effective parameters which proves the robustness of the presented methods