Finite Element Analysis of Bend Test of Sandwich Structures Using Strain Energy Based Homogenization Method

Hassan Ijaz, Waqas Saleem, Muhammad Zain-ul-Abdein, Tarek Mabrouki, Saeed Rubaiee, Abdullah Salmeen Bin Mahfouz

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)
12 Downloads (Pure)


The purpose of this article is to present a simplified methodology for analysis of sandwich structures using the homogenization method. This methodology is based upon the strain energy criterion. Normally, sandwich structures are composed of hexagonal core and face sheets and a complete and complex hexagonal core is modeled for finite element (FE) structural analysis. In the present work, the hexagonal core is replaced by a simple equivalent volume for FE analysis. The properties of an equivalent volume were calculated by taking a single representative cell for the entire core structure and the analysis was performed to determine the effective elastic orthotropic modulus of the equivalent volume. Since each elemental cell of the hexagonal core repeats itself within the in-plane direction, periodic boundary conditions were applied to the single cell to obtain the more realistic values of effective modulus. A sandwich beam was then modeled using determined effective properties. 3D FE analysis of Three- and Four-Point Bend Tests (3PBT and 4PBT) for sandwich structures having an equivalent polypropylene honeycomb core and Glass Fiber Reinforced Plastic (GFRP) composite face sheets are performed in the present study. The authenticity of the proposed methodology has been verified by comparing the simulation results with the experimental bend test results on hexagonal core sandwich beams.
Original languageEnglish
Article number8670207
Number of pages10
JournalAdvances in Materials Science and Engineering
Publication statusPublished - 11 Jun 2017
Externally publishedYes

Bibliographical note

Copyright © 2017 Hassan Ijaz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited


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