A Viscoplastic Model Based on No-Yierd-Surface Concept

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Zhou Guang-quan, Cheng Jing-yi. A Viscoplastic Model Based on No-Yierd-Surface Concept[J]. Applied Mathematics and Mechanics, 1989, 10(4): 323-330.

Citation:

Zhou Guang-quan, Cheng Jing-yi. A Viscoplastic Model Based on No-Yierd-Surface Concept[J]. Applied Mathematics and Mechanics, 1989, 10(4): 323-330.

Citation:

Zhou Guang-quan, Cheng Jing-yi. A Viscoplastic Model Based on No-Yierd-Surface Concept[J]. Applied Mathematics and Mechanics, 1989, 10(4): 323-330.

Abstract

The elastic/viscoplastic 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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