3次元はりモデルの選択がバラスト道床繰り返し変形解析結果に及ぼす影響

抄録

We discuss the influence of modeling of 3-D beams in a curved railway track on simulated deformation behavior of ballast layer. Since the rail has a thin part and has only one axis of symmetry in the cross-section, it is considered that the vibration response is affected by warpage. The track vibration analysis is carried out for evaluating the maximum value of the railpad force. The cyclic deformation of a ballast track is simulated using the elastoplastic FEM with the cyclic densification model. We investigate the effect of the warpage deformation on the simulation results.