Determining of parameters of nonisothermal cyclic curve model

Abstract

It was proposed methodology of determining parameters of model of nonisothermal cyclic stress-strain curve. Algorithm of pattern recognition was implemented. It was based on minimization of function of mismatch between experimental results and calculation of three-parameter model curve which depends on Bauchinger’s effect, elastic unloading modulus and scale of transformation of nonlinear part of stress-strain curve. Odkvist’s parameter was used for measure of plastic deformation. Simulation of cyclic stress strain curve was carried out. Results of simulation were compared with experimental data.

Keywords

plasticity / thermomechanical surface / stress-strain curve / cyclic nonisothermal loading / Bauchinger’s effect / elastic unloading modulus

References

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RIGHTS & PERMISSIONS

Temis J.M., Fakeev A.I.