Abstract
Tooth bending failure, one of the gear’s most dangerous failure modes, is caused by alternating bending stress at the tooth root. The fatigue process is divided into crack initiation and crack propagation periods. In this paper, single tooth bending fatigue tests are conducted under a stress ratio of 0.05. Crack initiation life is predicted by the strain-life method. Material gradients and residual stresses are taken into account in the above process. The crack propagation life is predicted by linear elastic fracture mechanics. The Paris equation is used to simulate the fatigue crack growth. Finally, the total bending fatigue life can be estimated. Predicted fatigue life and failure locations show good agreement with the experimental results.
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The datasets used during the current study are available from the corresponding author on reasonable request.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (51775315), China and Key Technology Research and Development Program of Shandong Province, China (2019JZZY010114).
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XS: Conceptualization, writing—original draft. JZ: Conceptualization, writing—review and editing, project administration. YH: Supervision, project administration. ZL: Supervision, project administration. ZZ: Methodology. SS: Data curation, investigation. SG: Methodology. YL: Methodology.
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Sun, X., Zhao, J., Hu, Y. et al. The Prediction and Experimental Study of Bending Fatigue Life of Carburized Gears. J. of Materi Eng and Perform 33, 1051–1059 (2024). https://doi.org/10.1007/s11665-023-07999-y
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DOI: https://doi.org/10.1007/s11665-023-07999-y