Journal of South China University of Technology (Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (8): 1-6.doi: 10.3969/j.issn.1000-565X.2017.08.001

• Automotive Engineering •     Next Articles

Dynamic Response Analysis of a Transmission Housing Under Variable Speed Conditions

ZANG Meng-yan1 MENG Ning1 CHU Shu-min2 CHEN Yong3   

  1. 1.School of Mechanical and Automotive Engineering，South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Zhejiang Geely Automobile Institute Co.,Ltd.,Hangzhou 311228,Zhejiang,China; 3.School of Mechanical Engineering,Hebei University of Technology,Tianjin 300130,China
  • Received:2016-09-23 Revised:2017-03-24 Online:2017-08-25 Published:2017-07-02
  • About author:臧孟炎(1961-)，男，教授，博士生导师，主要从事 CAE 技术开发与应用研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China(11672344)

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Abstract: Based on the dynamic theory of the multi-body system,a dynamic model of a gear transmission system is constructed by taking into account the effects of the time-varying mesh stiffness，the tooth backlash,the bearing stiffness and damping，and the speed variation.Then，the dynamic meshing forces of gears and the dynamic forces of housing bearing seats are calculated,and after a flexible housing model is constructed，the natural frequency and modal shapes of the transmission housing are obtained.Finally,by taking the dynamic forces of the housing bearing seats as the excitation,the modal superposition method is adopted to calculate the dynamic response,thus acquiring the information relative to the vibration of the nodes on the housing surface.Simulation results show that,when a constant torque is applied,the vibration acceleration amplitude of the housing surface increases with the increase of the rotating speed,which accords well with the experimental results within a margin of error of 10%.

Key words:  transmission, dynamic analysis, modal superposition method, dynamic response