511 複雑な振動形状を持つ鉄道車両のFEM 解析

抄録

This paper describes a study of bending vibration of a railway vehicle carbody by FEM. Railway vehicles with lightweight carbody have some natural modes of bending vibration in the high sensitivity frequency region for humans. Therefore, suppressing the bending vibration is necessary to improve the riding comfort. However, their vibration shapes are complicated, so it's difficult to calculate the effect at design process. The authors have developed the FEM model that is composed of whole carbody supported by air springs, and the simulation is carried out to calculate natural frequencies, mode shapes and frequency response function. The results show that it is able to evaluate the vibration mode characteristics of actual railway vehicle using the FEM model.