Composite steel-CFRP SHS tubes under axial impact

被引：96

作者：

Bambach, M. R. ^{[1
]}

Elchalakani, M. ^{[2
]}

Zhao, X. L. ^{[1
]}

机构：

[1] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[2] Dubai Mens Coll, Fac Civil Engn, Dubai, U Arab Emirates

来源：

COMPOSITE STRUCTURES | 2009年 / 87卷 / 03期

关键词：

Composite tubes; Square hollow sections; CFRP; Axial compression; Impact; Crashworthiness; PLASTIC MECHANISM ANALYSIS; REINFORCED METAL TUBES; ENERGY-ABSORPTION; SQUARE TUBES; COLLAPSE; COMPRESSION; SECTIONS; FAILURE; FRUSTA;

D O I：

10.1016/j.compstruct.2008.02.008

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Composite steel-carbon fibre reinforced polymer (CFRP) tubes combine the benefits of the stable, ductile plastic collapse mechanism of the steel and the high strength to weight ratio of the fibre/resin composite, to form a composite tube with high energy absorption capability. This paper presents experimental results of square hollow section (SHS) composite steel-CFRP tubes subjected to axial impact. A number of different steel SHS geometries and two different matrix layouts of the CFRP are investigated. The dynamic results are compared with quasi-static results of composite steel-CFRP SHS and dynamic results of steel SHS and CFRP SHS. It is shown that the crashworthiness properties of load uniformity and specific energy absorption of the composite steel-CFRP tubes exceed those of the steel-only and CFRP-only tubes. An additional advantage of the CFRP application technique is that the CFRP may be retro-fitted to existing steel tubes, and the energy absorption capacity is shown to be markedly improved by such application. A theoretical method to calculate the dynamic mean crushing load which includes the effects of strain-rate is shown to compare well with the experimental results. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：282 / 292

页数：11

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