THERMAL STRESS-RELIEF PROCESS - NUMERICAL COMPUTATIONAL MODEL

In the article [3] the authors propose a mathematical model of optimization thermal stress-relief process which are conditioned by the plastic yield speed phenomenon. These actual models take in advance experimental results but don’t reflect another practical phenomenon, the plastic yield speed is increasing in the vicinity of material yield point. In this paper is computed using numerical method Runge-Kutta [1] the time variation law σ(t) of thermal residual stresses at OLC45 steel.