Crushing Investigation of Crash Boxes Filled with Honeycomb and Re-entrant (auxetic) Lattices

Jonathan Simpson, Zafer Kazancı

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study investigates the crush response of lattice filled square tubes under quasi-static compressive loading. Auxetic lattice (auxetic strut and re-entrant) filled tubes have been compared to a non-auxetic (honeycomb) filled alternative and an empty tube. All structural lattices within this study were designed to be of equal mass. The experimental results were computationally validated using Abaqus®/Explicit. Experimental and numerical results show good agreement which highlights that the addition of lattice structures greatly improved the crashworthiness performance of the crash tube compared with an empty tube. By comparing the experimental values of energy absorption (EA), through the inclusion of a filler lattice a 62.6%, 64.0% and 79.1% increase over the empty tube were obtained for the auxetic strut, re-entrant and honeycomb structures respectively.
Original languageEnglish
Article number106676
Number of pages14
JournalThin-Walled Structures
Volume150
Early online date24 Feb 2020
DOIs
Publication statusPublished - May 2020

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