Abstract
The aim of this work is to propose a 3D FE model of a theoretical assembling straight bevel gear pair to analyze the contact fatigue on the tooth surface and the bending fatigue in the tooth root. Based on the cumulative fatigue criterion and the stress-life equation, the key meshing states of the gear pair were investigated for the contact fatigue and the bending fatigue. Then, the reliability of the proposed model was proved by comparing the calculation result with the simulation result. Further study was performed to analyze the variation of the contact fatigue stress and the bending fatigue stress under different loads. Furthermore, the roles of the driving pinion and the driven gear pair were evaluated in the fatigue life of the straight bevel gear pair and the main fatigue failure mode was determined for the significant gear. The results show that the fatigue failure of the driving pinion is the main fatigue failure for the straight bevel gear pair and the bending fatigue failure is the main fatigue failure for the driving pinion.
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Foundation item: Project(51105287) supported by the National Natural Science Foundation of China; Project(2012BAA08003) supported by the Key Research and Development Project of New Products and New Technologies of Hubei Province, China; Project(2011-P05) supported by the State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, China
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Deng, S., Hua, L., Han, Xh. et al. Finite element analysis of contact fatigue and bending fatigue of a theoretical assembling straight bevel gear pair. J. Cent. South Univ. 20, 279–292 (2013). https://doi.org/10.1007/s11771-013-1486-y
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DOI: https://doi.org/10.1007/s11771-013-1486-y