作者: B. Kowalski , C. M. Sellars , M. Pietrzyk
DOI: 10.2355/ISIJINTERNATIONAL.40.1230
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摘要: In the present work an investigation of constitutive equations is made to obtain good fit experimental data and ensure proper extrapolation out range plane strain compression tests low high values Zener-Hollomon parameter, which are required in finite element modelling. A computer program for optimisation rheological parameters material was developed. Optimisation using two ultra carbon steels results compared with measured stress-strain curves. The obtained were used model comparison between computed displacement-force curves made. influence inhomogeneity rate, temperatures distribution during on flow illustrated.