Estimation of the Fatigue Life of 35NCD16 Alloy Steel Under Random Loading

摘要

The paper deals with the prediction of the fatigue life of 35NCD16 (36NiCrMo16) steel under random loading. This material is a high-strength alloy steel characterized by the absence of mutual parallelism of the fatigue characteristics for extension and torsion. It is shown that the fatigue life should not be estimated by using standard models because they do not take into account the variability relative to the tangential and normal stresses. The comparison of the experimental data with the numerical results obtained by using the proposed model gives satisfactory results.