著者

栗田 健 若林 雄介 山田 晴夫 堀内 雅彦

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.54-57, 2007-07-18

被引用文献数

1

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It becomes more important to reduce the noise generated from Shinkansen train for further speed-up of Shinkansen. We developed the high-speed test train "FASTECH360" that has new equipment such as low-noise pantographs, "multi-segment slider", pantograph noise insulation plates and sound-absorbing panels for the noise from the lower area of car bodies. We investigated the noise distribution of "FASTECH360" by using a spiral microphone array, and we have taken countermeasures for the noise sources of "FASTECH360" based on the primary results of high-speed tests. Currently, the results show that the noise level of "FASTECH360" at the speed of 330km/h is approximately equal to that of the present commercial train at the speed of 275km/h (at a distance of 25m from the track).

著者

栗田 健 若林 雄介 山田 晴夫 堀内 雅彦

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 2007.17 (ISSN:24242969)

巻号頁・発行日

pp.54-57, 2007-07-18 (Released:2017-06-19)

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It becomes more important to reduce the noise generated from Shinkansen train for further speed-up of Shinkansen. We developed the high-speed test train "FASTECH360" that has new equipment such as low-noise pantographs, "multi-segment slider", pantograph noise insulation plates and sound-absorbing panels for the noise from the lower area of car bodies. We investigated the noise distribution of "FASTECH360" by using a spiral microphone array, and we have taken countermeasures for the noise sources of "FASTECH360" based on the primary results of high-speed tests. Currently, the results show that the noise level of "FASTECH360" at the speed of 330km/h is approximately equal to that of the present commercial train at the speed of 275km/h (at a distance of 25m from the track).

著者

栗田 健 若林 雄介 水島 文夫 山崎 展博 山田 晴夫 原 正明

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集 : JSME annual meeting

巻号頁・発行日

vol.2009, no.2, pp.253-254, 2009-09-12

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To increase the speed of Shinkansen trains, it becomes more important to reduce the noise generated from Shinkansen cars. We developed the high-speed test trains "FASTECH360" that have new equipment such as low-noise pantographs, pantograph noise insulation plates and sound-absorbing panels for the noise from the lower area of car bodies. We conducted running tests using "FASTECH360" from June of 2005 to June of 2009. As a result, the noise level of "FASTECH360S"(runs only on Shinkansen line) at the speed of 360km/h is reduced by more than 4 dB compared to that of series E2-1000, present commercial trains, at the speed of 360 km/h (at a distance of 25 m from the track). We also performed the noise analysis of "FASTECH360S" at 360 km/h. Consequently, we estimated that pantograph noise contribution to the overall noise level was reduced by about 7dB compared to that of E2-1000 at 360 km/h and contribution of noise from the lower part of cars to the overall noise level was reduced by about 1dB as well.

著者

佐藤 祐 橋 弘矩 若林 雄介 永瀬 和彦

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:03875024)

巻号頁・発行日

vol.73, no.725, pp.59-65, 2007-01-25 (Released:2011-03-04)

参考文献数

8

被引用文献数

1 1

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The authors proposed a new method which could easily and precisely detect the contact point position between the rail and the wheel under the critical condition of wheel climb derailment. As the result of the experiment using the above mentioned method, they found that the position was variously changed according to rail attack-angles and wheel lift-up values from the rail tread. The next, employing the contact point position, a new conception was proposed to theoretically calculate the wheel lift-up value from the rail tread when a wheel climb derailment occurred. Using a model track and a model truck, experimentation was done to examine the difference between the theoretically calculated value and the practically measured one on the wheel lift-up value. The result obtained was very much in agreement with the theoretically calculated value and the practical lift-up one.

著者

山崎 展博 北川 敏樹 宇田 東樹 栗田 健 若林 雄介 西浦 敬信

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 (ISSN:21879761)

巻号頁・発行日

vol.83, no.851, pp.17-00146-17-00146, 2017 (Released:2017-07-25)

参考文献数

16

被引用文献数

4

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A method has been developed for predicting the aerodynamic noise from the bogie of a high-speed train using a two-dimensional microphone array in a low-noise wind tunnel. First, the mean velocity distribution of flow was simulated precisely in the low-noise wind tunnel. Next, aerodynamic noise generated by the bogie, hereinafter referred to as aerodynamic bogie noise, was estimated from the noise source distribution measured with the two-dimensional microphone array. Finally, based on the experimental results, the predicted noise generated from the lower part of the car (i.e. the total of the aerodynamic noise estimated through the proposed method and the rolling and machinery noise estimated in a previous study) was compared with the measurement data obtained near the track in the field test. It was found that the predicted sound pressure level showed good agreement with those measured in the field test. This suggests that the proposed method is appropriate to estimate the aerodynamic bogie noise quantitatively. It was also shown that the contribution of the aerodynamic bogie noise to the total noise generated from the lower part of the car is greater than that of rolling and machinery noise, especially below 500 Hz.