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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2026, Vol. 45 ›› Issue (7): 109-116.DOI: 10.3969/j.issn.1674-0696.2026.07.13

• 现代交通装备 • 上一篇    

基于响应面法的跨座式单轨车辆走行轮胎热疲劳寿命预测与优化研究

文孝霞1，祝明扬1，杜子学1，陈亮2，杨祺彬3   

  1. (1. 重庆交通大学 机电与车辆工程学院，重庆 400074； 2. 重庆中车长客轨道车辆有限公司，重庆 401133； 3. 重庆轨道四号线建设运营有限公司，重庆 400026)
  • 收稿日期:2025-03-17 修回日期:2025-06-16 发布日期:2026-07-21
  • 作者简介:文孝霞(1977—)，女，贵州遵义人，教授，博士，主要从事现代车辆设计理论与方法方面的研究。E-mail：wenxiaoxia150@163.com 通信作者：祝明扬(2002—)，男，四川南充人，硕士，主要从事城市轨道交通方面的研究。E-mail：13088266380@163.com
  • 基金资助:
    重庆市自然科学基金项目（CSTB2022NSCQ-MSX1264）；重庆市技术创新与应用发展专项重大项目（CSTB2024TIAD-STX0021）

Thermal fatigue life prediction and optimization of running tires for straddle type monorail vehicles based on response surface methodology

WEN Xiaoxia1, ZHU Mingyang1, DU Zixue1, CHEN Liang2, YANG Qibin3   

  1. (1. School of Mechatronics and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. Chongqing CRRC Changke Railway Vehicles Co., Ltd., Chongqing 401133, China; 3. Chongqing Rail Transit Line 4 Construction and Operation Co., Ltd., Chongqing 400026, China)
  • Received:2025-03-17 Revised:2025-06-16 Published:2026-07-21

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摘要： 跨座式单轨车辆走行轮胎在运营中存在界面脱层现象，为有效提升走行轮胎的安全性与使用寿命，降低走行轮胎运维成本，以跨座式单轨车辆走行轮胎为研究对象，建立了走行轮胎有限元模型。通过稳态滚动、侧偏、侧倾3种工况的热力耦合作用下应力、应变结果，结合Lake-lindley模型与最大撕裂能法拟合疲劳参数，利用FE-safe软件对多工况下走行轮胎的热疲劳寿命进行模拟；以走行轮胎疲劳寿命为目标，带束层帘线角度和间距为优化变量，基于响应面法与遗传免疫算法开展走行轮胎带束层帘线参数优化研究。研究结果表明：稳态滚动工况下胎面沟槽和带束层末端为高风险区域，载荷增大显著缩短寿命；侧偏工况下胎体胶反包点及侧倾工况下胎面侧倾端、三角胶区域出现疲劳损伤；通过走行轮胎带束层帘线角度与间距优化，走行轮胎疲劳寿命提升了24.4%。研究结果为跨座式单轨车辆走行轮胎结构疲劳优化设计提供了一定的理论依据及方法支持。

关键词: 车辆工程；跨座式单轨车辆；走行轮胎；疲劳损伤；优化

Abstract: The running tires of straddle type monorail vehicles have the phenomenon of interface delamination during operation. To effectively enhance the safety and service life of the running tires and reduce the operation and maintenance costs of the running tires, the running tires of straddle type monorail vehicles were taken as the research object, and a finite element model of the running tires was established. Through the stress and strain results under the thermal coupling effects of three working conditions (steady-state rolling, side bias, and side inclination), the Lake-Lindley model was combined with the maximum tear energy method to fit the fatigue parameters, and the thermal fatigue life of the running tires under multiple working conditions was simulated by the FE-safe software. Taking the fatigue life of the running tires as the target, the angle and spacing of the belt layer cord were the optimization variables. Based on the response surface method and genetic immune algorithm, the research on optimization of the running tire belt layer cord parameters was carried out. The research results show that the tire tread grooves and the end of the belt layer in the steady-state rolling condition are high-risk areas, and the load increase significantly shortens the lifespan. Fatigue damage occurs at the tire body rubber rebound point under the side bias condition and at the tire surface side inclination end and triangular rubber area under the side inclination condition. By optimizing the angle and spacing of the belt layer cord of the running tires, the fatigue life of the running tires has increased by 24.4%. The research results provide a certain theoretical basis and methodological support for the fatigue optimization design of the running tire structure of straddle type monorail vehicle.

Key words: vehicle engineering; straddle type monorail vehicle; running tire; fatigue damage; optimization

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