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<p>Shimmy-induced vibrations degrade vehicular handling stability. Firstly, the dynamic model of vehicle shimmy system is established, and the shimmy phenomenon of the prototype vehicle is successfully reproduced. The critical vehicle speed and frequency of shimmy obtained by simulations are highly consistent with the vehicle shimmy test results, which verifies the accuracy of the dynamic model of vehicle shimmy system. Based on the virtual prototyping model of vehicle shimmy system, the sensitivity analysis of vehicle system parameters is carried out, the result shows that the stiffness of rubber bushings installed at both ends of the upper and lower longitudinal rods is one of the key sensitive factors affecting the shimmy, the reduction of the radial stiffness of rubber bushings installed at both ends of the upper and lower longitudinal rods to a certain extent can effectively suppress shimmy, which provides a theoretical reference for avoiding the shimmy phenomenon.</p>

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Dynamic analysis and suppression strategy of vehicle shimmy system with suspension rubber bushings

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Lei Shi,
  • Jianwei Lu,
  • Heng Wei,
  • Yingjie Zhu,
  • Guotao Zhou

摘要

Shimmy-induced vibrations degrade vehicular handling stability. Firstly, the dynamic model of vehicle shimmy system is established, and the shimmy phenomenon of the prototype vehicle is successfully reproduced. The critical vehicle speed and frequency of shimmy obtained by simulations are highly consistent with the vehicle shimmy test results, which verifies the accuracy of the dynamic model of vehicle shimmy system. Based on the virtual prototyping model of vehicle shimmy system, the sensitivity analysis of vehicle system parameters is carried out, the result shows that the stiffness of rubber bushings installed at both ends of the upper and lower longitudinal rods is one of the key sensitive factors affecting the shimmy, the reduction of the radial stiffness of rubber bushings installed at both ends of the upper and lower longitudinal rods to a certain extent can effectively suppress shimmy, which provides a theoretical reference for avoiding the shimmy phenomenon.