文献类型：期刊文献

英文题名：Experimental study of the out-of-plane dynamic compression of hexagonal honeycombs

作者：Xu, Shanqing[1,2];Beynon, John H.[1];Ruan, Dong[1];Lu, Guoxing[3]

机构：[1]Swinburne Univ Technol, Fac Engn & Ind Sci, Hawthorn, Vic 3122, Australia;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

年份：2012

卷号：94

期号：8

起止页码：2326

外文期刊名：COMPOSITE STRUCTURES

收录：;EI(收录号：20122015026783);WOS:【SCI-EXPANDED(收录号:WOS:000304793100007)】；

基金：The authors are grateful to the Cooperative Research Centre for Advanced Automotive Technology (AutoCRC) for the financial support through a postgraduate scholarship and the Swinburne University of Technology. The constructive discussion with Professor Tongxi Yu is also much appreciated.

语种：英文

外文关键词：Aluminium hexagonal honeycombs; Out-of-plane compression; Strain rate effect; Deformation pattern; Dynamic

摘要：The out-of-plane crushing behaviour of four types of aluminium hexagonal honeycombs was extensively investigated over a wide range of strain rates where each test was conducted at a constant compressive velocity. The effects of specimen dimensions, relative density, strain rate and honeycomb cell size on the mechanical properties of honeycombs were studied. It was demonstrated that the mean plateau force was linearly related to the specimen dimensions. However, the calculated plateau stress varied with specimen dimensions and a minimum of 9 x 9 cells should be used in order to represent the bulk properties of honeycombs. A large strength enhancement of honeycombs was observed when the relative density and strain rate increased. The tangent modulus also increased towards the end of the crushing process, especially for those honeycombs with small values of wall thickness to edge length ratio (t/l). Semi-empirical relations were obtained to describe the effects of relative density (t/l ratio) and strain rate on the plateau stress. The difference in deformation patterns for honeycombs between quasi-static and dynamic loading conditions was also discussed. Crown Copyright (c) 2012 Published by Elsevier Ltd. All rights reserved.