Choosing method of unloading velocity of hydraulic damper for railway vehicles

DAI Huan-yun

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DAI Huan-yun. Choosing method of unloading velocity of hydraulic damper for railway vehicles[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 11-15.

Citation:

DAI Huan-yun. Choosing method of unloading velocity of hydraulic damper for railway vehicles[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 11-15.

DAI Huan-yun. Choosing method of unloading velocity of hydraulic damper for railway vehicles[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 11-15.

Citation:

DAI Huan-yun. Choosing method of unloading velocity of hydraulic damper for railway vehicles[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 11-15.

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Choosing method of unloading velocity of hydraulic damper for railway vehicles

DAI Huan-yun

Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

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Author Bio:
DAI Huan-yun(1966-), male, researcher, PhD, +86-28-86466616, daihuanyun@163.com
Received Date: 2008-02-21
Publish Date: 2008-08-25

Abstract

Abstract

In order to accurately choose the unloading velocity of hydraulic damper for railway vehicle, a 2σ method was proposed.The relative velocity of the damper was obtained by test and dynamics simulation, and probability statistical analysis, parameter estimation and probability distribution inspection were processed.Based on the normal distribution feature of the relative velocity, the 2σ value of the relative velocity was taken as the unloading velocity.The simulation result indicates that 95% of low frequency vibrations are damped, and 5% of high frequency vibrations are filtered by using the damper with the unloading velocity determined by the method.
- vehicle engineering,
- hydraulic damper,
- unloading velocity,
- probability statistics,
- parameter estimation,
- hypothesis test,
- choosing method

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References(10)

References

[1]	严隽耄. 车辆工程[M]. 北京: 中国铁道出版社, 1999.
[2]	LU Peng-min, HE Li-mei, YOU Jin-min. Optimization of vehicle suspension parameters based on comfort and tyredynamic load[J]. China Journal of Highway and Transport, 2007, 20(1): 112-117. (in Chinese) doi: 10.3321/j.issn:1001-7372.2007.01.021
[3]	FANG Zi-fan, DENG Zhao-xiang, WENG Jian-sheng. Study of control strategy of automobile magnetorheological semiactive suspension[J]. China Journal of Highway and Transport, 2006, 19(2): 106-110. (in Chinese) doi: 10.3321/j.issn:1001-7372.2006.02.019
[4]	YIN Wan-jian, HAN Ying, YANG Shao-pu. Dynamics analysis of air spring suspension systemunder forced vibration[J]. China Journal of Highway and Transport, 2006, 19(3): 117-121. (in Chinese) doi: 10.3321/j.issn:1001-7372.2006.03.022
[5]	ZHANG Li-jun, YU Zhuo-ping, OUYANG Peng. Experimental research on the mechanical damping characteristics of automotive hydraulic shock absorber[J]. Noise and VibrationControl, 2005, 25(3): 33-36. (in Chinese) doi: 10.3969/j.issn.1006-1355.2005.03.010
[6]	WRANG M. Instability phenomena of a passenger coach caused by internal yawdamper flexibility[J]. Vehicle System Dynamics, 1999, 33(S): 406-416.
[7]	KASTEEL R V, QI AN Li-xin, WANG Cheng-guo, et al. Study on working principle and numerical model of shock absorbers used in rail way vehicles[J]. Journal of the China Rail way Society, 2005, 27(2): 28-34. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB200502004.htm
[8]	DAI Huan-yun, YANJun-mao, WANG Kai-wen, et al. Thebogie configuration selection and dynamic performance prediction for 250 km/h high speed passenger vehicle[J]. Journal of the China Railway Society, 1994, 16(S): 68-74. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB201605007.htm
[9]	盛聚, 谢式前, 潘承毅. 概率论与数理统计[M]. 北京: 高等教育出版社, 2000.
[10]	戴焕云. 半主动高速客车动力学计算报告[R]. 成都: 西南交通大学, 2002.