Journal of South China University of Technology (Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (2): 23-29,38.doi: 10.3969/j.issn.1000-565X.2017.02.004

• Automotive Engineering • Previous Articles     Next Articles

Analysis of Vibration Isolation Performances of Vehicle Suspension System Based on Vibrational Power Flow Method

SHANGGUAN Wen-bin1 CHEN Cheng-feng1 LI Li-ping1 YU Hong2 QI Zhen-ning2   

  1. 1,School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Ningbo Tuopu Group Co.,Ltd.,Ningbo 315800,Zhejiang,China
  • Received:2016-09-27 Revised:2016-10-30 Online:2017-02-25 Published:2016-12-31
  • Contact: 上官文斌( 1963-) ，男，博士，教授，主要从事汽车振动分析与控制研究． E-mail:shangguanwb99@tsinghua.org.cn
  • About author:上官文斌( 1963-) ，男，博士，教授，主要从事汽车振动分析与控制研究．
  • Supported by:
    Supported by the Key Program of National Natural Science Foundation of China( 51275175)

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Abstract:

In order to optimize the bushing and structure of vehicle body,a vibration isolation analysis model for the bushing and the top mount of vehicle suspension system is established,and the expressions of force and displacement vector at each join point between two substructures are decuced.Then,by using the vibration power transmission analysis method,a method is presented to calculate the power transmitting to the vehicle body under the road excitation through each bushings.Moreover,by taking a typical Macpherson suspension as the example,a multi-body dynamic model of the suspension is established with ADAMS software,and the power transmitting to the vehicle body through each bushing and top mount is calculated and analyzed,which helps to identify the maximum power transmission path.Finally,the influence of bushing characteristics on the power transmission is analyzed,and the effect of a hydraulic bushing on the vibration damping of vehicle body caused by the lateral excitation is discussed.

Key words: vehicle suspension system, bushing, vibration damper, vibration power flow, transfer path, vibration isolation performance

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