Dynamic Simulation and Experimental Identification for Fatigue Pitting Helical Gear Fault

doi:10.3901/JME.2021.09.061

Abstract

Abstract: Helical gears are the core components of automobile transmissions, and tooth pitting is one of the main failure forms that affect the transmission stability and reliability of automobile transmissions. Based on the impact function method, contact line percentage method and gear system dynamics theory, the dynamic model of helical gear system with different pitting types is established. The dynamic response of pitting helical gear system is analyzed. At the same time, through the gear fatigue pitting test, vibration acceleration signals of gears with different pitting degrees are obtained. The time and frequency domain characteristics of different pitting degrees on gear vibration acceleration are obtained through FFT analysis. Thus, the accuracy of the dynamic model is verified. The results show that the dynamic response of the helical gear system can be used to predict and identify the pitting degree and form of the helical gear.

Key words: helical gear, pitting, dynamics, dynamic response

CLC Number:

TH132

CHEN Yong, LI Jinkai, ZANG Libin, LIU Yiqi, BI Wangyang, YANG Xiaopeng. Dynamic Simulation and Experimental Identification for Fatigue Pitting Helical Gear Fault[J]. Journal of Mechanical Engineering, 2021, 57(9): 61-70.

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