Modal synthesis dynamic modeling and analysis for an automotive drive axle system

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (9) : 7-12.

ZHOU Chi1,DING Weiqi2,GUI Liangjin1,FAN Zijie1

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Abstract

A modal synthesis dynamic modeling and analysis method for an automotive drive axle system was proposed.The transmission system model and the housing model were coupled with nonlinear bearing elements.In order to realize static nonlinear solving and dynamic analysis of the drive axle system quickly and accurately,finite element models of its components were condensed with the modal synthesis method.Meshing forces of a couple of hypoid gears were calculated based on the finite element contact analysis method.The dynamic responses of the drive axle system excited by the meshing forces of the couple of hypoid gears were calculated and verified with tests.The numerical analysis results revealed the dynamic characteristics of the drive axle system under the excitation of the meshing forces of the couple of hypoid gears correctly and guided the vibration and noise reduction design of the drive axle effectively.

Key words

drive axle / modal synthesis method / hypoid gear / dynamic analysis

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ZHOU Chi1,DING Weiqi2,GUI Liangjin1,FAN Zijie1. Modal synthesis dynamic modeling and analysis for an automotive drive axle system[J]. Journal of Vibration and Shock, 2017, 36(9): 7-12

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