NDLI: Mathematical Modeling andDynamic Analysis of Planetary Gears System with Time-Varying Parameters

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Mathematical Modeling andDynamic Analysis of Planetary Gears System with Time-Varying Parameters

Content Provider	Semantic Scholar
Author	Xiao, Zheng-Ming Cao, Jinxin Yu, Yinxin
Copyright Year	2020
Abstract	Planetary gears are widely used in automobiles, helicopters, heavy machinery, etc., due to the high speed reductions in compact spaces; however, the gear fault and early damage induced by the vibration of planetary gears remains a key concern. (e timevarying parameters have a vital influence on dynamic performance and reliability of the gearbox. An analytical model is proposed to investigate the effect of gear tooth crack on the gear mesh stiffness, and then the dynamical model of the planetary gears with time-varying parameters is established. (e natural characteristics of the transmission system are calculated, and the dynamic responses of transmission components, as well as dynamic meshing force of each pair of gear are investigated based on varying internal excitations induced by time-varying parameters and tooth root crack. (e effects of gear tooth root crack size on the planetary gear dynamics are simulated, and the mapping rules between damage degree and gear dynamics are revealed. In order to verify the theoretical model and simulation results, the planetary gear test rig was built by assembling faulty and healthy gear separately. (e failure mechanism and dynamic characteristics of the planetary gears with tooth root crack are clarified by comparing the analytical results and experimental data.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://downloads.hindawi.com/journals/mpe/2020/3185624.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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