著者

森村 勉

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.123, no.10, pp.668-671, 2003-10-01 (Released:2008-04-17)

著者

森村 勉 関 雅樹 石川 栄 坂上 啓 三輪 昌弘 村松 浩成 西村 和彦 吉田 幸司 足立 昌仁 南 善徳

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. C編 = Transactions of the Japan Society of Mechanical Engineers. C (ISSN:03875024)

巻号頁・発行日

vol.76, no.764, pp.825-834, 2010-04-25

参考文献数

12

被引用文献数

1

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We conducted full scale experiment to study the derailment mechanism of high speed railway vehicle by earthquake ground motion. The experiment was arranged to mimic the vehicle/track conditions of Tokaido Shinkansen by using the bolsterless bogie and the track materials both presently in use for Tokaido Shinkansen. Large excitations enough to derail the test vehicle were given, so that derailment motions were fully captured. Through the tests, (1) Total 34 cases of derailment were observed by the sine wave excitations in the frequency ranges of 1.1Hz to 1.5Hz. The test vehicle was derailed as the result of rocking motion. (2) Wheel lifts of around flange height without derailment were observed by the sine wave excitations in the frequency ranges of 0.5Hz to 1.0Hz. (3) By comparing the vehicle motions of two cases of different ballast conditions, we learned that dynamic features of the ballast track brings no significant difference on the vehicle dynamics of those cases. (4) Finding reasonable match between the experimental results and analytical results obtained from the simulation developed by the authors, we further investigated the possibility of derailment by the sine wave excitations in the frequency ranges of 0.5Hz to 1.0Hz and found that vehicle was to be derailed by giving larger excitation amplitudes than those given in the experiment.

著者

角南 浩靖 曄道 佳明 森村 勉 足立 昌仁

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.781, pp.3237-3252, 2011 (Released:2011-09-25)

参考文献数

15

被引用文献数

1

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To minimize the risk of fatalities in the event of earthquakes, it is extremely important to prevent the derailed vehicle from deviating from the track as well as to prevent the vehicle from derailment. Authors have developed a post derailment stopper (hereinafter referred to as, “stopper”), which attaches to a bogie frame and prevents derailed vehicles from veering of the track. For the development of the stopper and evaluation of its efficacy, we conducted running tests under derailment conditions using real bogies and tracks. Based on the results of the running tests, we have developed a 15DOF vehicle dynamics model in order to discuss the motion of the bogie in the derailment condition. In this model, focusing on the analysis of the motion of the bogie and the stopper, vertical wheel displacements which were measured at the running tests are used as input data and non-linear characteristics observed at the running tests are considered. In this paper, we analyze the motion of the bogie and efficacy of the stopper with this model and the test results.

著者

森村 勉

出版者

一般社団法人日本機械学会

雑誌

環境工学総合シンポジウム講演論文集

巻号頁・発行日

vol.2007, no.17, pp.1-6, 2007-07-18