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

Jonathan Simpson; Zafer Kazancı

doi:10.1016/j.tws.2020.106676

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

Jonathan Simpson, Zafer Kazancı

School of Mechanical and Aerospace Engineering

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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 language	English
Article number	106676
Number of pages	14
Journal	Thin-Walled Structures
Volume	150
Early online date	24 Feb 2020
DOIs	https://doi.org/10.1016/j.tws.2020.106676
Publication status	Published - May 2020

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Crushing Investigation of Crash Boxes Filled with Honeycomb and Re-entrant (auxetic) Lattices
© 2020 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/,which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.
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Zafer Kazancı
- z.kazanciqub.acuk
- School of Mechanical and Aerospace Engineering - Senior Lecturer
Person: Academic

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

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{\textregistered}/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. ",

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

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Zafer Kazancı

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