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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 3    June 2001

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Thermal residual stresses and stress
distributions under tensile and
compressive loadings of short fiber
reinforced metal matrix composites
DING Xiang-dong(丁向东)1,2, LIAN Jian-she(连建设)2,
JIANG Zhong-hao(江中浩)2, SUN Jun(孙  军)1

1. State Key Laboratory for Mechanical Behavior of Materials,
School of Materials Science and Engineering,
Xi′an Jiaotong University, Xi′an 710049, P.R.China;
2. College of Materials Science and Engineering,
Jilin University of Technology, Changchun 130025, P.R.China

Abstract:  The thermal residual stresses and the stress distributions of short fiber reinforced metal matrix composite under tensile and compressive loadings were studied using large strain axisymmetric elastoplastic finite element method. It is demonstrated that the thermal residual stresses can result in asymmetrical stress distributions and matrix plasticity. The thermal residual stresses decrease the stress transfer in tension and enhance the stress transfer in compression. The fiber volume fraction has more important effects on the thermal residual stresses and the stress distributions under tensile and compressive loadings than the fiber aspect ratio and the fiber end distance.

 

Key words:   metal matrix composite; finite element method; thermal residual stresses; stress distribution

ISSN 1672-7029
CN 43-1423/U

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