鉄道車輪軸の転走におけるカオス状振動　支持弾性の低下にともなう蛇行運動の変動

DOI 機関リポジトリ 機関リポジトリ HANDLE HANDLE ほか2件をすべて表示 一部だけ表示

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  • Chaotic Oscillation of a Wheelset Rolling on a Rail. Variation in the Hunting Motion Induced by Lowering the Restrating Stifness.
  • テツドウ シャリンジク ノ テンソウ ニ オケル カオスジョウ シンドウ シジ

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In this study, chaotic behavior of a single wheelset rolling on a rail has been examined numerically. The single wheelset model is assumed to be elastically restrained from an imaginary truck frame moving in parallel with a straight track. In the simulation, nonlinear forces of the flange-rail contact and the wheel-rail creep are involved. When the elastic restraint is decreased, self-excited lateral oscillation occurs even in the practical speed range ; then the oscillation bifurcates into chaotic behavior. The chaotic features are confirmed by the correlation dimension, bifurcation diagram, power sepctrum and Poincare map.

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