Fatigue lives of 18G2A and 10HNAP steels under variable amplitude and random non-proportional bending with torsion loading

Marciniak, Zbigniew; Rozumek, Dariusz; Macha, E.

doi:10.1016/j.ijfatigue.2007.07.001

Cited by 59 publications

(56 citation statements)

References 15 publications

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“…As per the results presented above, the value of d significantly affects the accuracy of fatigue life prediction [15,31,38]. A novel method for determining the value of d accurately is thus proposed in this paper on the basis of previous research and in consideration of the effects of damage and stress state.…”

Section: Conclusion and Discussionmentioning

confidence: 84%

“…This process improved estimation accuracy. Marciniak et al [38] used Corten-Dolan's model to predict fatigue life under non-proportional loading and determined that predictions were overestimated as a result of the uncertainty of d . Zhu et al [15] proposed a practical method to determine d by defining this variable as a function of loading stress amplitude to facilitate the consideration of load interaction effects.…”

Section: Introductionmentioning

confidence: 99%

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An improved Corten-Dolan’s model based on damage and stress state effects

Gao

Huang

et al. 2015

J Mech Sci Technol

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The value of exponent d in Corten-Dolan's model is generally considered to be a constant. Nonetheless, the results predicted on the basis of this statement deviate significantly from the real values. In consideration of the effects of damage and stress state on fatigue life prediction, Corten-Dolan's model is improved by redefining the exponent d used in the traditional model. The improved model performs better than the traditional one with respect to the demonstration of a fatigue failure mechanism. Predictions of fatigue life on the basis of investigations into three metallic specimens indicate that the errors caused by the improved model are significantly smaller than those induced by the traditional model. Meanwhile, predictions derived according to the improved model fall into a narrower dispersion zone than those made as per Miner's rule and the traditional model. This finding suggests that the proposed model improves the life prediction accuracy of the other two models. The predictions obtained using the improved Corten-Dolan's model differ slightly from those derived according to a model proposed in previous literature; a few life predictions obtained on the basis of the former are more accurate than those derived according to the latter. Therefore, the improved model proposed in this paper is proven to be rational and reliable given the proven validity of the existing model. Therefore, the improved model can be feasibly and credibly applied to damage accumulation and fatigue life prediction to some extent.

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Section: Conclusion and Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

An improved Corten-Dolan’s model based on damage and stress state effects

Gao

Huang

et al. 2015

J Mech Sci Technol

View full text Add to dashboard Cite

show abstract

“…The above discrepancy between the result of present model and the experiment for series E03 could be explained by considering that the equivalent Lemaitre stress method is based on multiaxial S-N curve for proportional loading. Instead, as pointed out in the experimental tests [34], the experimental lives of 18G2A steel under non-proportional loadings are greater than those under proportional loadings with the same variance ratio. From what has been discussed above, it may be concluded that the results of fatigue life calculated by the proposed method with multiaxial S-N curve are well correlated with the experiment.…”

Section: Experimental Verification Of the Proposed Modelmentioning

confidence: 80%

Fatigue life estimation under multiaxial random loading by means of the equivalent Lemaitre stress and multiaxial S – N curve methods

Sun

Zhou

2015

International Journal of Fatigue

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“…Histories of bending and torsion moments have been independently generated. Then the nominal normal and the shear stress histories were obtained using the section modulus of bending and torsion [13]. The obtained normal and shear stresses were both in-phase loading (proportional loading).…”

Section: Verifications Of the Proposed Fatigue Modelmentioning

confidence: 99%