Self‐heating measurements under cyclic loading to identify history effects on HCF properties of high‐strength low‐alloy steel: Part II—Modeling

Abstract

The present paper proposes a new version of a model for high cycle fatigue of steels able to take load history effects into account. This model is developed in a probabilistic two-scale framework. The proposed model accounts not only for the failure of samples under high cycle loadings but also for the thermal effects during cycling in a unified theoretical framework. Thus, an ad hoc identification procedure, essentially based on self-heating tests under cyclic loadings provided in the accompanying paper, is proposed. The model was then validated by predicting the effect of a pre-cycling loading on S-N curves.

Self‐heating measurements under cyclic loading to identify history effects on HCF properties of high‐strength low‐alloy steel: Part I—Experimental investigations

“…All of these findings are used to propose a numerical model based on self‐heating measurements, which will be able to predict load history effects on fatigue properties, given in the accompanying paper 54 …”

“…The proposed numerical approach allowing to assess fatigue properties from self-heating measurements is given in an accompanying paper. 54…”

“…Then, the experimental procedure for self‐heating measurements is presented followed by the experimental results considering three load history effects: a plastic pre‐strain effect, a cyclic pre‐loading effect, and the combination of those two previous effects. The proposed numerical approach allowing to assess fatigue properties from self‐heating measurements is given in an accompanying paper 54 …”

Thermo‐based fatigue life prediction: A review

“…The number of PSBs increased with loading amplitude. Pre‐loading history effect Louge et al 108 took the pre‐loading history effects into account, and the model was then validated by predicting the effect of plastic pre‐strain and cyclic pre‐loading on S–N curves. Saint‐Sulpice et al 109 recently modified this model to: with the parameter identified using of the highest stress loading.…”

“…• Pre-loading history effect Louge et al 108 took the pre-loading history effects into account, and the model was then validated by predicting the effect of plastic pre-strain and cyclic pre-loading on S-N curves. Saint-Sulpice et al 109 recently modified this model to:…”