Triaxial compression of aluminium foams

被引：69
作者：
Ruan, D.
Lu, G. [1 ]
Ong, L. S.
Wang, B.
机构：
[1] Swinburne Univ Technol, Fac Engn & Ind Sci, Hawthorn, Vic 3122, Australia
[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[3] Univ Manchester, Dept Mech Aerosp & Civil Engn, Manchester M13 9PL, Lancs, England
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 06期
基金：
澳大利亚研究理事会;
关键词：
aluminium foam; mechanical properties; strength; stress/strain curves; failure criterion;
D O I：
10.1016/j.compscitech.2006.05.005
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Triaxial compressive tests have been conducted on CYMAT closed-cell aluminium foams of five different relative densities to investigate their initial failure surfaces under multiaxial loading. Quasi-static uniaxial compressive and tensile tests have also been performed to obtain their uniaxial strength. The experimentally measured yield surfaces are compared with various published phenomenological yield surface models. Reasonable agreement has been observed when suitable Poisson's ratios are employed. Triaxial compressive tests have been carried out on foams with nominal relative density of 17% at various axial loading velocities to study the effect of strain rate on the initial failure surface. The results showed that the initial yield stresses of CYMAT closed-cell aluminium foams are not sensitive to the axial strain rate ranged from 10(-4) to 10(+1) s(-1). (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1218 / 1234
页数：17
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