著者

森山 淳

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集C編 (ISSN:18848354)

巻号頁・発行日

vol.77, no.778, pp.2389-2399, 2011 (Released:2011-06-25)

参考文献数

13

被引用文献数

3 2

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To clarify the overturning possibility of trains exposed to strong cross wind, several experiments were done to study the affect of the wind velocity and wind direction on the axle load changing. In this paper, the results of the experiment in the Japan Sea Coast Main Line, where the seasonal wind swept bitterly in winter, are described. Various kinds of trains, such as limited express, fright, commuter and local, were operated on the sites. To eliminate the turbulence of the wind on the sites, the 3 wind sensors were installed parallel with the track at regular intervals. As the results of the experiments, the author found that the ratio of wheel unloading caused by the wind could be more accurately expressed by the “Detailed equation” than the Kunieda's equation which was conventionally used to decide the regulation standard to prevent the train overturning by the strong cross wind in Japanese railways. Mesurement data also show that consideration of relative wind velocity and relative wind direction is important for running vehicle.

著者

森山 淳

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集C編 (ISSN:18848354)

巻号頁・発行日

vol.78, no.791, pp.2536-2548, 2012 (Released:2012-07-25)

参考文献数

10

被引用文献数

3 2

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For the clarification of the overturning behavior of railway vehicle exposed to strong cross wind, several experiments were done to study the effect of wind velocity and wind direction on the wheel unloading ratio. In this paper, the results of the experiment at a line in the Kanto region are described. In this line, strong wind is often observed, and various types of train are operated. To get useful knowledge about the improvement of the critical wind speed of vehicle overturning, data were analyzed in terms of the vehicle cross-sectional shape. Results of the experiment show that vehicle specifications, such as a car weight, or a bogie suspension are little effective for overturning, if there are no difference about the cross-sectional shape. Analyzed results of the experiment also show that depending on the cross-sectional shape, the behavior of wheel unloading ratio by strong wind is different. These results suggest the possibility of the superiority of round shape roof for improving the performance against overturning.