A STRESS UPDATE ALGORITHM FOR THE THEORY OF VISCOPLASTICITY BASED ON TOTAL STRAIN AND OVERSTRESS
To describe the sensitivity to the rate of loading of commonly used stainless steels, use is made of the theory of viscoplasticity based on total strain and overstress. Numerical techniques are proposed that allow a systematic treatment of the chosen viscoplastic constitutive model within the context of transient finite element analysis. In particular, a stress update procedure is suggested which falls within the category of elastic predictor - return mapping algorithms. Numerical examples are included to illustrate the effect of the rate of loading on the stress distribution.
Bibliographic Reference: INTERNATIONAL CONFERENCE ON COMPUTATIONAL PLASTICITY - MODELS, SOFTWARE AND APPLICATIONS, BARCELONA (SPAIN), APRIL 6-10, 1987 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 33198 ORA
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Record Number: 1989125074700 / Last updated on: 1987-12-01
Available languages: en