Relaxation patterns of technological residual voltage in the surface layer of high-strength steel when cyclically loaded

Experimentally investigated patterns of changes in technological residual stresses under the influence variable pressure surface layer became 30XNS2A. A mathematical model relaxation compressive created by plastic deformation techniques with symmetrical cyclical bending samples has been proposed. An empirical expression is proposed for assessing final value as a result cyclic loading, depending on stress amplitude symmetric cycle. given estimating coefficient rate from their initial value, alternating and material properties. The constants these expressions are determined various construction materials. theoretical dependences describe well obtained experimental data. To predict level realization operational formula was to calculate change action step loading block different amplitudes duration at each stages.