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Modeling of cyclic thermo-elastic-plastic behaviour of P91 steel

Sulich P., Egner W., Mroziński S., Egner H.

Journal of Theoretical and Applied Mechanics

2017

Vol. 55 nr 2

595--606

Thermomechanical low cycle fatigue behaviour of P91 steel used in power industry applications has been extensively investigated. The constitutive model of Armstrong-Frederick, extended with temperature rate effects, has been applied to describe the behaviour of the thermo-elastic-plastic material. The proposed model has been successfully implemented in simulation of low cycle fatigue of the examined steel in two different temperatures.