Homogenization Method for Modeling and Analysis of the Honeycomb Structure-Simulation Study and Validation.

Abstract

This study presents a comprehensive approach to modeling honeycomb structures using the homogenization method, utilizing a Representative Volume Element (RVE) to derive equivalent orthotropic mechanical properties of the honeycomb structure. Three finite element models (two-dimensional and three-dimensional) were examined, considering the decreasing complexity and computational effort associated with each modeling approach. The outcomes of the analysis for each modeling approach were reported, with attention to boundary condition application and numerical singularities. Validation through four-point bending tests and an analytical approach confirmed the model's ability to replicate the mechanical behavior of the panel. The obtained results have shown perfect agreement between the results of the numerical test employing the proposed model and the experimental test results of real structures. It was found that the proposed simplified numerical model allows for a reduction in the calculation time of c.a. 54%. Additionally, some disadvantages of using procedures included in commercial software such as a black box have been shown.