Abstract
A standard constitutive relationship for superplastic materials assumes a power function of stress vs strain rate. This assumption is a particular case of a more general one: the stressed state is determined only by the strain-rate tensor. We propose a method of constructing this general function experimentally from experimental data for solid or thick-walled tubular cylinder specimens.
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References
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Vasin, R.A., Filippov, O.G. On Dependence of the Stress on Strain Rate of Superplastic Materials. Strength of Materials 32, 311–315 (2000). https://doi.org/10.1023/A:1026627932158
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DOI: https://doi.org/10.1023/A:1026627932158