鉄道車両用連結装置の作用力に関する数値解析法の比較

抄録

Concerning the train set buckling phenomenon, maximum coupler force may be usually estimated by means of the numerical methods based on the low of conservation of mechanical energy or numerical integration. Though these methods has many records in the past, there has been no definitive comparison between these methods. In this paper, differences between these two methods are demonstrated. Based on the results of the study, the conception available for distinguishing the usage between the two methods is summarized as follows. First, coupler force obtained from the method based on the low of conservation of mechanical energy tends to be larger than the numerical integration method. Therefore, if the coupler force obtained by the former method does not exceed the limit value related to strength, there is no need to apply the numerical integration method. Second, when a train set contains more than one car, numerical integration method will show more precise values. Finally, the transient response of coupler force and acceleration can be obtained only by the numerical integration method.