Crushing investigation of crash boxes filled with honeycomb and re-entrant (auxetic) lattices

被引：108

作者：

Simpson, Jonathan ^{[1
]}

Kazanc, Zafer ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Mech & Aerosp Engn, Adv Composites Res Grp, Belfast BT9 5AH, Antrim, North Ireland

来源：

THIN-WALLED STRUCTURES | 2020年 / 150卷

关键词：

Auxetic; Crash box; Crashworthiness; Lattice structures; Quasi-static; ENERGY-ABSORPTION; COMPOSITE TUBES; CRASHWORTHINESS; ABSORBERS; COLUMNS; DESIGN; RATIO;

D O I：

10.1016/j.tws.2020.106676

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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 (R)/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.

引用

页数：14

共 39 条

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