Transactions of Materials and Heat Treatment

Title：Axial crushing energy absorption properties of composite structure for crochet-sintering porous tube and thin-walled aluminium alloy tube

Authors： Yang Jie Xiao Xiaoting Wu Fei Liu Qian

Unit： Guangdong University of Technology

KeyWords： porous tube thinwalled hollow tube for aluminum alloy 6063 composite structure axial impact crash worthiness energy-absorbing properties

ClassificationCode：TG146

year,vol(issue):pagenumber：2018,43(7):176-182

Abstract：

Taking ultrafine soft stainless steel 304 wire rope as the base material, a new type of porous tube was produced by the method of single annular crocheting and vacuum solidphase sintering, and the axial crushing energy absorption properties of porous tube were studied. Then, two kinds of composite tubes, external composite tube (TC) and thinwall core composite tube (CTC), were fabricated by the combination of porous tube (C) and thin-walled hollow tube(T) for aluminum alloy 6063, and the axial impact energy absorption properties of composite tube structures and corresponding thin-wall hollow tubes for aluminium alloy were researched comparatively. The results show that the new type of crochet-sintering porous tube has excellent energy-absorbing properties and it is a good energy-absorbing structural component. However, the energy absorption (EA), the initial peak crushing force (PCF) and the mean crusing force (MCF) of composite structures are all larger than the corresponding thin-walled hollow tubes, and the deformation mode of composite structures is influenced by the compound effect of porous tube and thin-walled hollow tube. Thus, between two kinds of composite tubes, the crushing force efficiency (CFE) of CTC is the maximum and even higher than that of the corresponding thin-walled hollow tube, and CTC has the best energy-absorbing effect.

Funds：

国家自然科学基金资助项目（51705085）

杨洁（1993-），女，硕士研究生，E-mail：gdutyangjie@163.com；通讯作者：肖小亭（1957-），男，博士,教授，博士生导师，E-mail：xiaoxt@gdut.edu.cn

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