Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 18, 2020 - November 20, 2020
A large number of vibrations are applied to a railway vehicle while it is running, and the natural vibration phenomenon occurs when the frequency of the vibration approaches the natural frequency of the vehicle itself. It is a common phenomenon but it is also an issue to prevent it from occurring, and it is necessary to clarify each natural vibration mode of the vehicle. In this study, we performed a running experiment by using a railway roller rig. By PSD analysis of the vibration acceleration at each measurement point, it is clear where the natural vibration phenomenon occurs at lateral and we know the experimental value through running experiment. We also modeled horizontal 6 degrees of freedom of the roller rig model, calculated the natural frequency, and grasped the theoretical natural vibration mod by using numerical analysis software. By comparing the theoretical value and the experimental value, the natural vibration analysis method was established.
