Homogenized failure model of corrugated sandwich panels under tension

Corrugated core sandwich panels are widely used due to their high strength-to-weight ratio and superior energy absorption. This paper presents a finite element homogenization model to predict the mechanical failure behavior of corrugated core sandwich panels under tension. The homogenization method simplifies the complex core geometry while preserving the mechanical properties of the structure. A homogeneous 2D plate replaces the 3D model of the panel with isotropic properties. The mechanical behavior model of Chow and Wang is used to describe the response of each material layer. The homogenization process is performed through local integration over the thickness of the layers. The model is implemented in Abaqus software through the UGENS user subroutine. The results from the model are compared with full 3D simulations, demonstrating the computational efficiency, model-building time, and accuracy of the proposed method