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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.1 P.13-18

http://doi.org/10.1631/jzus.2002.0013


Stress field near an interface edge of linear hardening materials


Author(s):  XU Jin-quan, FU Lie-dong

Affiliation(s):  Department of Mechanics, Zhejiang University, Hangzhou, China, 310027

Corresponding email(s):   jinquan@mech.nagaokaut.ac.jp

Key Words:  interface edge, elastoplasticity, linear hardening, singularity, boundary element method


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XU Jin-quan, FU Lie-dong. Stress field near an interface edge of linear hardening materials[J]. Journal of Zhejiang University Science A, 2002, 3(1): 13-18.

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Abstract: 
The elastic-plastic singular stress field near an interface edge of bounded linear hardening material is substantially as same as that of bonded elastic materials whose Young's modulus and Poisson ratio are substituted by equivalent values, respectively. Further investigation by the elasto-plastic boundary element method (BEM) on the stress field near the interface edge showed that the stress field there can be divided into three regions: the domain region of the elastic-plastic singular stress field, the transitional region and the elastic region. The domain region of the elastic-plastic singular stress becomes larger with the increasing of the linear hardening coefficient. When the linear hardening coefficient decreases to a certain value, the effective stress in most of the yield zone equals approximately the yield stress. The stress distribution in the elastic region under small-scale yielding condition was also investigated.

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Reference

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