• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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Volume 20 Issue 1
Feb.  2007
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Article Contents
LUO Yan, YANG Xianjie, GAO Qing. Constitutive Model for Cyclic Softening Behavior of 45 Steel under Uniaxial Cyclic Straining[J]. Journal of Southwest Jiaotong University, 2007, 20(1): 99-103.
Citation: LUO Yan, YANG Xianjie, GAO Qing. Constitutive Model for Cyclic Softening Behavior of 45 Steel under Uniaxial Cyclic Straining[J]. Journal of Southwest Jiaotong University, 2007, 20(1): 99-103.

Constitutive Model for Cyclic Softening Behavior of 45 Steel under Uniaxial Cyclic Straining

  • Received Date: 10 Dec 2005
  • Publish Date: 25 Feb 2007
  • In order to describe the cyclic softening behavior of materials more exactly,a cyclic plastic constitutive model was proposed based on the deformation character of quenched-tempered 45 carbon steel under symmetrical and unsymmetrical cyclic loadings.In this model,strain softening after the upper yield stress in the first 1/4 cycle is taken into account.In addition,the subsequent cyclic softening behavior was simulated by utilizing the evolution equations of yield radius and backstress.The research results show that the predicted results agree well with the experimental ones for the shape of cyclic softening hysteresis loops and the evolution of stress amplitude with cyclic number during the low cycle fatigue.

     

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