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A MODIFIED THERMAL VISCOPLASTIC CONSTITUTIVE LAW INVOLVING THE EFFECT OF TEMPERATURE RISE RATE

【摘要】:正 At high temperature rise rate,the mechanical properties of 10 # steel were determined ex-perimentally in a very wide range of temperature and strain rates.A new constitutive relationship was put for-ward,which can fit with the experimental results and describe various phenomena observed in our experim-ents.Meanwhile,some interesting characteristics about the temperature rise rate,strain and strain rate hard-ening and thermal softening are also shown in this paper.Finally,the reliability of the constitutive law andthe correctness of the constitutive parameters were verified by comparing the calculation results with the ex-perimental data.

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