Dynamic modeling, modification and experimental verification of spur gear with faults

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (13) : 315-323.

ZHANG Baoqiang, WANG Xin, YAN Weijie, LUO Huageng

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Abstract

It is difficult and costly to simulate complete gear failure types and failure degrees by experiment. In this paper, a bent-torsional coupling vibration analysis model of spur gear is established by using a lumped parameter method, and the time-varying meshing stiffness is determined by using the energy method. With the proposed model, the influence of different failure forms such as crack, pitting on the time-varying meshing stiffness of gear pair is studied. Following this, the system parameters in the dynamic model are adjusted using the system model modification method to create a dynamic model that more closely aligns with the actual system. The numerical example of the corrected spur gear reveals the characteristic response rules in the time and frequency domains for different failure types and degrees. The accuracy of the dynamic model for spur gears with faults is confirmed through the analysis of experimental vibration signals. The results show that the model can accurately identify various gear failure types in spur gears, providing strong data support for establishing a fault diagnosis database for spur gear systems

Key words

Gear dynamics model / Structural dynamic modification / Failure mechanism / Fault database

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ZHANG Baoqiang, WANG Xin, YAN Weijie, LUO Huageng. Dynamic modeling, modification and experimental verification of spur gear with faults[J]. Journal of Vibration and Shock, 2024, 43(13): 315-323

References

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