Probability density evolution method for the ride comfort evaluation of high speed trains

被引：0
作者：
Liu Z. [1 ,2 ]
Zhang C. [1 ,2 ]
Qi D. [1 ,2 ]
机构：
[1] Hubei Key Laboratory of Disaster Prevention and Reduction, China Three Gorges University, Yichang
[2] College of Civil Engineering & Architecture, China Three Gorges University, Yichang
来源：
| 2018年 / Chinese Vibration Engineering Society卷 / 37期
关键词：
High-speed train; Probability density evolution method; Ride comfort; Spectral representation-random function; Track irregularity;
D O I：
10.13465/j.cnki.jvs.2018.14.020
中图分类号：
学科分类号：
摘要：
Applying the spectral representation-random function method in dealing with stationary stochastic processes, combined with the power spectral density of track irregularity, a representative sample set of track irregularity was simulated and the object of expressing a track irregularity stochastic process by only one elementary random variable was achieved. With the track irregularity as an external random excitation, the probability density evolution method for analyzing vehicle-track coupling stochastic dynamic systems was established to obtain the rich probability information involved in the vertical accelerations of high-speed trains. At the same time, according to the UIC513 evaluation standard of passengers' ride comfort, for both ballast track and ballastless track lines, the ride comfort of high-speed trains at three different speeds of 200 km/h, 250 km/h and 300 km/h was analyzed respectively. The results show that there is natural consistency between the spectral representation-random function method and probability density evolution method, the combination of the two methods provides an efficient and accurate analysis method for stochastic dynamic responses of the vehicle-track coupling system, and realizes the elaborative calculation of passengers' ride comfort, which provides a new way for the vehicles-track coupling system response analysis and comfort evaluation of high-speed trains. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
引用
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页码：149 / 155
页数：6
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