Расчет кинетики остаточных напряжений в поверхностно упрочненном вращающемся призматическом образце с полукруглым надрезом в условиях температурно-силового нагружения при ползучести

Abstract

The process of kinetics of residual stresses is analyzed in surface-hardened rotating prismatic specimen with semicircular notch radius ρ = {0.1; 0.3} mm at creep modeled in ANSYS. The influence of specimen rotation with angular velocity ω = {1500; 2000} RPM at temperature T = 650 °C during the t = 100 hrs on residual stress relaxation was studied. It has been established that the proceeding of relaxation process, for all the calculated cases of the hardened specimen with a notch the temperature and force unloading after 100 hours there is still a high level of residual stresses near the stress concentrator zone.