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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 98
Edited by: J. Pombo
Paper 35

A Study of Matching Relations between Equipment Suspension Parameters and Carbody Structure

H.C. Wu1, P.B. Wu1, D.L. Yu2 and C.L. Zhao2

1Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu, China
2National Engineering Laboratory for System Integration of High Speed Train, CSR Qingdao Sifang Co. Ltd., Qingdao, China

Full Bibliographic Reference for this paper
H.C. Wu, P.B. Wu, D.L. Yu, C.L. Zhao, "A Study of Matching Relations between Equipment Suspension Parameters and Carbody Structure", in J. Pombo, (Editor), "Proceedings of the First International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 35, 2012. doi:10.4203/ccp.98.35
Keywords: railway vehicle, flexible carbody, hybrid multibody system, equipment suspension parameters, matching relations.

In this paper, a beam model is set up to investigate the influence of equipment suspension style on the amplitude frequency characteristic curves of a coupling model; and the response displacement versus unit input displacement at the centre of the carbody. The results reveal that the flexible suspension can increase the vertical bending frequency of the carbody and decrease the vibration amplitude.

In order to study the influence law of the equipment partial load and analyse the matching relations between the carbody and equipment, a hybrid multibody model of the vehicle is set up. The simulation results show that the equipment partial load have a great influence on the ride index of the carbody. The equipment lateral partial load affects the lateral ride index of the carbody, but the longitudinal partial load mainly affects the vertical ride index. When the flexible suspension frequency is close to the carbody bending frequency, the minimum vibration of the carbody occurs. Increasing the suspension damping ratio has little influence on the vibration of the carbody when the suspension frequency is greater than the bending frequency of the carbody.

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