Multi-Objective Optimization Study for the Turnout Sub-Rail Parameters Based on Orthogonal Experiment
Lu Yongjie*, 1, 2, Zhu Bowen3, Wang Jianxi4
Identifiers and Pagination:Year: 2014
First Page: 567
Last Page: 573
Publisher Id: TOMEJ-8-567
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
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.
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.