1車両シミュレーションモデルによる鉄道車両の横風に対する安全性評価(機械力学,計測,自動制御)

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In order to analyze the behavior of a railway vehicle that is subjected to crosswind in more detail, we constructed a simulation program applying a full-vehicle model as developed based on a half-vehicle model. Further, we examined the effect of yawing moment induced by crosswind and that of static wheel load imbalance on overturning or wheel unloading ratio. First, we verified the validity of the simulation program by comparing the data as acquired through the full scale experiment applying lateral force to the vehicle dynamically or the wind tunnel test using a reduced model. As a result, it has been verified that the simulation program is valid for evaluating the wheel load variation of the vehicle. Secondly, using the full-vehicle simulation program, we examined the effects those not considered in the half-vehicle model on overturning or wheel unloading ratio. As a result, it has been revealed that the wheel unloading ratio takes a maximum value when the yawing moment is zero. It has also been apparent that when we consider the relationship between the wind speed and the wheel unloading ratio or overturning, it is imperative to evaluate the wheel unloading ratio as averaged through the vehicle nevertheless the static wheel load imbalance of each axle. Consequently, by using the full-vehicle simulation program, we can analyze the behavior of the railway vehicle as subjected to crosswind or can evaluate the critical wind speed of overturning more precisely. In addition, we can also evaluate quantitatively the difference between the results by the full-vehicle model and by the former half-vehicle one.
2010-11-25

1車両シミュレーションモデルによる鉄道車両の横風に対する安全性評価(機械力学,計測,自動制御)

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