日本機械学会論文集
Online ISSN : 2187-9761
ISSN-L : 2187-9761
交通・物流
同一台車内での車輪・レール間摩擦係数の差異が走行安全性に及ぼす影響(台上試験による実測と数値解析の比較)
道辻 洋平石井 翔長澤 研介松本 陽大野 寛之佐藤 安弘緒方 正剛谷本 益久岩本 厚福島 知樹品川 大輔
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2017 年 83 巻 856 号 p. 17-00283

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It is important to secure running safety of railway vehicles against wheel-climb derailment accidents. The safety is often discussed according to the value of derailment coefficients for the leading outside wheel of a railway bogie running on sharp curves. Therefore, the detailed force induced mechanism which influences the value of derailment coefficients should be clarified. One of the most dominant factors affecting the value of derailment coefficients is magnitudes of the coefficient of friction (COF) between wheel and rail. Since the gauge corner of the outer rail and the top of the inner rail are lubricated at some sharp curves, COF of wheels of a bogie are different from each other and show complicated variation. In this study, the effect of lubrication for the running safety of the railway bogie is investigated while considering the detailed force induced mechanism of the derailment coefficient increase utilizing both multibody dynamics simulations and experiments. Experiments and simulations are conducted with a roller-rig test equipment under various conditions of wheel/rail lubrication. In this research, a method to identify whether the bogie is in suitably lubricated condition in terms of running safety is discussed. The proposed method making use of the longitudinal force measurement with mono-link type axle supporting device is mentioned.

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© 2017 一般社団法人日本機械学会
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