鉄道車両の車体，台車および車体・台車間結合要素特性が振動乗り心地に与える影響

There exists the case that bending vibration of railway carbody is caused by way of connecting elements of carbody and trucks, such as bolster anchors. To investigate these phenomena, the authors describe a new mathematical model in which the effect of the connecting elements on the vibration characteristics of railway vehicle are taken into consideration. The energy method is used to derive the equation of motion, and numerical calculations are carried out by using the proposed model. The riding comfort level LT is evaluated numerically for several specification parameters concerning of carbody, trucks and their connecting elements. The numerical results show that LT is largely improved when the bolster anchors and the center of gravity of truck are set nearby the center of wheelsets, and the effect of bolster anchor setting position on LT is studied in many aspects. It is found that the rigidity of bolster anchor supporting rubber bush has important role on the vertical vibration induced through the connecting elements of carbody and trucks.