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This paper outlines the alternative solutions to shift carbody system first bending frequency using an anti-bending bar and elastically suspended equipment under the carbody chassis. The study was conducted through numerical simulation of a scaled rail vehicle model. The model was validated by comparing the natural frequency with the experimental setup. According to the results, using the proper dimension of anti-bending bar to increase the carbody bending stiffness could enhance the carbody system first bending frequency without significantly increasing the carbody mass. Elastically suspended equipment can also work as a DVA to reduce structural bending vibration, and it will be optimum if the applied equipment natural frequency is slightly below the initial carbody system first bending frequency. The combination of both shifts the carbody system first bending frequency higher.

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Influence of Carbody Bending Stiffness and Elastically Suspended Under-Chassis Equipment to the Vertical Vibration of the Railway Vehicle Carbody: A Study Using a Scaled Model

  • 会议论文

  • 发表日期：

    2026年

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  • Yunendar Aryo Handoko,
  • Eki Dwi Juliansyah Putra,
  • Leonardo Gunawan

摘要

This paper outlines the alternative solutions to shift carbody system first bending frequency using an anti-bending bar and elastically suspended equipment under the carbody chassis. The study was conducted through numerical simulation of a scaled rail vehicle model. The model was validated by comparing the natural frequency with the experimental setup. According to the results, using the proper dimension of anti-bending bar to increase the carbody bending stiffness could enhance the carbody system first bending frequency without significantly increasing the carbody mass. Elastically suspended equipment can also work as a DVA to reduce structural bending vibration, and it will be optimum if the applied equipment natural frequency is slightly below the initial carbody system first bending frequency. The combination of both shifts the carbody system first bending frequency higher.