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Applied Mathematics and Mechanics (English Edition) ›› 1989, Vol. 10 ›› Issue (4): 337-344.

• 论文 • 上一篇    下一篇

A VISCOPLASTIC MODEL BASED ON NO-YIELD-SURFACE CONCEPT

周光泉, 程经毅   

  1. University of Science and Technology of China, Hefei
  • 收稿日期:1987-06-16 出版日期:1989-04-18 发布日期:1989-04-18
  • 基金资助:

    Projects Supported by National Natural Science Foundation of China

A VISCOPLASTIC MODEL BASED ON NO-YIELD-SURFACE CONCEPT

Zhou Guang-quan, Cheng Jing-yi   

  1. University of Science and Technology of China, Hefei
  • Received:1987-06-16 Online:1989-04-18 Published:1989-04-18

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摘要： The elasticjviscoplastic constitutive equation which describes deformation law of metal materials was suggested based on no-yield-surface concept and thermal activation theory of dislocation.The equation which takes account of effects of strain-rate, strain history, strain-rate history, hardening and temperature has stronger physical basis.Comparison of the theoretical prediction with experimental results of mechanical behaviours of Ti under conditions of uniaxial stress and room temperature shows good consistency.

Abstract: The elasticjviscoplastic constitutive equation which describes deformation law of metal materials was suggested based on no-yield-surface concept and thermal activation theory of dislocation.The equation which takes account of effects of strain-rate, strain history, strain-rate history, hardening and temperature has stronger physical basis.Comparison of the theoretical prediction with experimental results of mechanical behaviours of Ti under conditions of uniaxial stress and room temperature shows good consistency.

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