Study on failure mechanism of interference fit between gear and hollow shaft

Bo Huang; Hong Zhang; Xiaofeng Yu

doi:10.1117/12.2640797

20 September 2022 Study on failure mechanism of interference fit between gear and hollow shaft

Bo Huang, Hong Zhang, Xiaofeng Yu

Proceedings Volume 12261, International Conference on Mechanical Design and Simulation (MDS 2022); 122612X (2022) https://doi.org/10.1117/12.2640797
Event: Second International Conference on Mechanical Design and Simulation (MDS 2022), 2022, Wuhan, China

Abstract

A calculation method of interference fit between gear and hollow shaft is proposed, which is close to the finite element simulation results, and the effect of interference on contact stress and maximum Mises stress is further analyzed. The residual stress generated during the heat treatment of gear and hollow shaft and the dynamic load transmitted by the driving wheel are considered, and then the effects of residual stress and dynamic load on the interference fit between shaft and gear are studied. It is found that the magnitude of interference is linear with contact stress and maximum Mises stress. After adding residual stress, the relationship between residual stress and maximum Mises stress is nonlinear. Residual stress greater than 350MPa will cause plastic deformation of gear, resulting in weakening or even failure of interference fit connection. When the dynamic load is added, it can be found that the interference connection is further weakened, but the effect is smaller than the residual stress.

Citation Download Citation

Bo Huang, Hong Zhang, and Xiaofeng Yu "Study on failure mechanism of interference fit between gear and hollow shaft", Proc. SPIE 12261, International Conference on Mechanical Design and Simulation (MDS 2022), 122612X (20 September 2022); https://doi.org/10.1117/12.2640797

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