Analysis of Impact of Modal Contribution Factors of High-speed Train Body on Vibration

被引：0
作者：
He X. [1 ]
Zhang L. [1 ]
Lu L. [1 ]
Qiu F. [1 ]
机构：
[1] State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2017年 / 39卷 / 12期
关键词：
BGCI vector method; Dynamic model; MCF; Modal contribution value;
D O I：
10.3969/j.issn.1001-8360.2017.12.003
中图分类号：
学科分类号：
摘要：
In order to figure out the relationship between the main modal of high-speed train body and vehicle vibration, the BGCI vector method was used for the modal contribution calculation. The rigid flexible coupling dynamic car-body model was established and the vehicle operating modal parameters were identified by using thestochastic subspace method. Finally, the main modal was determined by modal confidence criterion (MAC) to calculate the modal contribution of the car body under different running speeds. The results show that the MCF of rigid mode decreases with speed increase. At speeds under 120 km/h, the MCF of rigid mode is greater than that of the flexible mode, and vice versa at speeds over 120 km/h. At the speeds greater than 80 km/h, the contribution of the vertical bending mode, rhombus mode and torsion mode of the car body to the car body vibration gradually increases (amax=0.035 m/s2)and the contribution of the flexible mode to the vibration significantly increases. The relationship between the modal contribution and the vehicle vibration can provide theoretical support for vehicle vibration control. © 2017, Editorial Office of Journal of the China Railway Society. All right reserved.
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页码：16 / 22
页数：6
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