Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains

The vibrations of high-speed trains may strongly affect the safety and ride comfort of passengers, which issue requires the damping optimization of under-chassis equipment (UCE). In this study, the natural frequency of UCE is determined via the dynamic vibration absorber theory. The performed invest...

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Main Authors: Zhanghui Xia, Dao Gong, Jinsong Zhou, Wenjing Sun, Yu Sun
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2018/6292595
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author Zhanghui Xia
Dao Gong
Jinsong Zhou
Wenjing Sun
Yu Sun
author_facet Zhanghui Xia
Dao Gong
Jinsong Zhou
Wenjing Sun
Yu Sun
author_sort Zhanghui Xia
collection DOAJ
description The vibrations of high-speed trains may strongly affect the safety and ride comfort of passengers, which issue requires the damping optimization of under-chassis equipment (UCE). In this study, the natural frequency of UCE is determined via the dynamic vibration absorber theory. The performed investigation of UCE-car body system vibration behavior revealed that an eccentricity of UCE results in the coupling vibration in six degrees of freedom, which leads to significant changes in its vibration mode and frequency. Thus, the natural frequency of UCE deviates from the initially determined value, which implies that the vibration damping effect is weakened. In this study, two decoupling optimization design methods, namely, forward and inverse decoupling methods, are proposed to solve this problem. The analysis of results obtained proves the feasibility of the proposed methods, which yield favorable decoupling degrees for the UCE vibration modes and minimize the offset of the vibration mode frequency from the initial natural one. These methods are considered quite instrumental in the improvement of vibration damping effect for high-speed trains.
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institution Kabale University
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publishDate 2018-01-01
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spelling doaj-art-c7b9bbcc9d8b4be48cfe9b27b4acc7342025-02-03T01:03:13ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/62925956292595Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed TrainsZhanghui Xia0Dao Gong1Jinsong Zhou2Wenjing Sun3Yu Sun4Institute of Rail Transit, Tongji University, Shanghai, ChinaInstitute of Rail Transit, Tongji University, Shanghai, ChinaInstitute of Rail Transit, Tongji University, Shanghai, ChinaInstitute of Rail Transit, Tongji University, Shanghai, ChinaInstitute of Rail Transit, Tongji University, Shanghai, ChinaThe vibrations of high-speed trains may strongly affect the safety and ride comfort of passengers, which issue requires the damping optimization of under-chassis equipment (UCE). In this study, the natural frequency of UCE is determined via the dynamic vibration absorber theory. The performed investigation of UCE-car body system vibration behavior revealed that an eccentricity of UCE results in the coupling vibration in six degrees of freedom, which leads to significant changes in its vibration mode and frequency. Thus, the natural frequency of UCE deviates from the initially determined value, which implies that the vibration damping effect is weakened. In this study, two decoupling optimization design methods, namely, forward and inverse decoupling methods, are proposed to solve this problem. The analysis of results obtained proves the feasibility of the proposed methods, which yield favorable decoupling degrees for the UCE vibration modes and minimize the offset of the vibration mode frequency from the initial natural one. These methods are considered quite instrumental in the improvement of vibration damping effect for high-speed trains.http://dx.doi.org/10.1155/2018/6292595
spellingShingle Zhanghui Xia
Dao Gong
Jinsong Zhou
Wenjing Sun
Yu Sun
Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains
Shock and Vibration
title Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains
title_full Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains
title_fullStr Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains
title_full_unstemmed Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains
title_short Decoupling Optimization Design of Under-Chassis Equipment Suspension System in High-Speed Trains
title_sort decoupling optimization design of under chassis equipment suspension system in high speed trains
url http://dx.doi.org/10.1155/2018/6292595
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AT daogong decouplingoptimizationdesignofunderchassisequipmentsuspensionsysteminhighspeedtrains
AT jinsongzhou decouplingoptimizationdesignofunderchassisequipmentsuspensionsysteminhighspeedtrains
AT wenjingsun decouplingoptimizationdesignofunderchassisequipmentsuspensionsysteminhighspeedtrains
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