11803 複数車輪通過時における車輪・軌道系の運動解析(車両と構造物の解析技術,OS.3 マルチボディダイナミクスによるシミュレーション技術の新展開)

抄録

The characteristic of vibration on railway system is that due to multipule wheels continuously passing on railway track and interactions between the wheels influence contact force. Contact force is thought to influence ride comfort and safety of high speed trains. In this paper, from a view point of multibody dynamics, the modeling and the formulation are proposed and we carried out numerical simulation on contact force fluctuation of high speed train in order to investigate the effect of the interactions between the wheels. As a result, it can be pointed out that natural frequency of the wheel/rail system and phase difference of contact point displacement on influence contact force fluctuation.