REVIEW ARTICLE


Multi-Objective Optimization Study for the Turnout Sub-Rail Parameters Based on Orthogonal Experiment



Lu Yongjie*, 1, 2, Zhu Bowen3, Wang Jianxi4
1 Shijiazhuang Tiedao University, Shijiazhuang, Hebei, 050043, P.R. China
2 Key Laboratory of Traffic Safety and Control in Hebei, Shijiazhuang, Hebei, 050043, P.R. China
3 Taiyuan Railway Transportation Equipment CO., LTD, Taiyuan, Shanxi, 030009, P.R. China
4 Key Laboratory of Road and Railway Engineering Safety Control of Ministry of Education (Shijiazhuang Tiedao University), Shijiazhuang, Hebei, 050043, P.R. China

Article Information


Identifiers and Pagination:

Year: 2014
Volume: 8
First Page: 567
Last Page: 573
Publisher Id: TOMEJ-8-567
DOI: 10.2174/1874155X01408010567

Article History:

Received Date: 10/09/2014
Revision Received Date: 05/11/2014
Acceptance Date: 05/11/2014
Electronic publication date: 31/12/2014
Collection year: 2014

© 2014 Yongjie et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Shijiazhuang Tiedao University, Shijiazhuang, Hebei, 050043, P.R. China; Tel: +86 13513217835; E-mail: lu-yongjie@163.com


Abstract

The stiffness and damping characteristics under the turnout rail are important factors affecting vehicle safety and stable running. According to the variable cross-section structure of a single 60 kg/m turnout No.18, a multi-body dynamic model of the vehicle-turnout coupled system is established. Based on the orthogonal test method, 25 group working conditions have been designed with the combination of the sub-rail stiffness and damping parameters. It has been found that the stiffness parameters under the rail have a greater impact on the vehicle’s performance through the range analysis of the simulation results. The vertical sub-rail stiffness mainly influences the vehicle’s vertical response and Sperling indicator. The lateral stiffness affects the derailment coefficient and the riding comfort. The matching scheme of the sub-rail stiffness and damping parameters is deduced by aiming towards the optimal vehicle security, stability and comfort, which provides a reference for the sub-rail structure design.

Keywords: Multi-body dynamic, Orthogonal test, Sub-rail, Turnout, Vehicle, Orthogonal scheme, Optimization study.