有限要素法を用いた車輪とレールの接触解析の検討

抄録

In recent years, rolling stock has been required to be faster and safer than ever before. One of the ways to achieve this is to reduce vehicle vibration. One of the factors that cause vehicle vibration is that the wheels are in contact with the rails while running. Therefore, the shape of the wheel treads changes every time the travel distance of the wheels increases, due to small wear and tear. There are only a few cases in which the effect of this change in wheel shape caused by wear on the behavior of the wheel has been investigated. In this study, it was investigated that the relationship between the development of wear on wheel surfaces and changes in wheel behavior. The method is compared with the experiments using the fabricated experimental apparatus and the analysis using ANSYS Workbench. In the experiments, the wheel was repeatedly run on the rail. As a result, the vertical acceleration of the wheel tended to increase and decrease as the travel distance increased. In the analysis, the model of a wheel running on the rail was fabricated and analyzed. As a result, an acceleration level of the new wheel was obtained for 114.57 Hz.