Energy absorption and collapse behavior of PP ‐based pin‐reinforced composite sandwich panels under quasi‐static flatwise compression loading

Ehsan Pedram, Hamed Ahmadi, Ali Kabiri, Mehran Ghalami Choobar, Omid Razmkhah, Neil Fellows, Gholamhossein Liaghat

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
30 Downloads (Pure)

Abstract

This article investigates the energy absorption and failure behavior of thermoplastic composite sandwich panels made entirely of polypropylene (PP) and pin‐reinforced core under quasi‐static compressive loading. The pins are manufactured by thermoforming and assembled with face sheets. The specimens were subjected to flatwise compressive loading to examine energy absorption capabilities. Moreover, the finite element method (FEM) is used to analyze core sandwich panels reinforced with cubic, cylindrical, beam, and cross‐beam pins. Furthermore, a closed‐form analytical model is adopted and developed to predict the critical load of these structures. The performed experiments were utilized to validate the damage mechanisms and critical displacements of the simulations and the analytically calculated maximum collapse loads. The results demonstrate that the predictions accurately capture both the critical failure load and failure mechanisms. Since the numerical results have a reasonable correlation with the experimental results and their output difference is
Original languageEnglish
Article number27307
Pages (from-to)3139-3152
Number of pages14
JournalPolymer Composites
Volume44
Issue number6
Early online date11 Mar 2023
DOIs
Publication statusPublished - Jun 2023

Bibliographical note

© 2023 The Authors. Polymer Composites published by Wiley Periodicals LLC on behalf of Society of Plastics Engineers.

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made

Keywords

  • composite sandwich panels
  • energy absorption
  • flatwise compression
  • pin‐reinforcement
  • polypropylene

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