Elastic-plastic endochronic constitutive model of 0Crl7Ni4Cu4Nb stainless steels

Jinquan Guo, Lianping Wu, Xiaoxiang Yang, Shuncong Zhong

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1 Citation (Scopus)
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Abstract

We presented an elastic-plastic endochronic constitutive model of 0Crl7Ni4Cu4Nb stainless steel based on the plastic endochronic theory (which does not need the yield surface) and experimental stress-strain curves. The key feature of the model is that it can precisely describe the relation of stress and strain under various loading histories, including uniaxial tension, cyclic loading-unloading, cyclic asymmetric-stress axial tension and compression, and cyclic asymmetric-stress axial tension and compression. The effects of both mean stress and amplitude of stress on hysteresis loop based on the elastic-plastic endochronic constitutive model were investigated. Compared with the experimental and calculated results, it is demonstrated that there was a good agreement between the model and the experiments. Therefore, the elastic-plastic endochronic constitutive model provides a method for the accurate prediction of mechanical behaviors of 0Crl7Ni4Cu4Nb stainless steel subjected to various loadings.

Original languageEnglish
Article number4396296
Number of pages6
JournalMathematical Problems in Engineering
Volume2016
DOIs
Publication statusAccepted/In press - 17 Jan 2016

Keywords

  • constitutive models
  • elastoplasticity
  • stress analysis
  • stress-strain curves
  • unloading

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