不同法向载荷与滑动速度下铁路货车制动梁磨耗套材料磨损行为与模型研究
Research on Wear Behavior and Model of Railway Freight Car Brake Beam Wear Sleeve Material under Different Normal Loads and Sliding Speeds
刘松民 1窦随权 1丁颖 2丁昊昊 1王文健1
作者信息
- 1. 西南交通大学摩擦学研究所,四川成都 610031
- 2. 国能铁路装备有限责任公司,北京 100120
- 折叠
摘要
铁路货车制动梁磨耗套在使用过程中容易产生严重磨损,进而影响制动性能与行车安全.为研究制动梁磨耗套材质的磨损行为,利用销盘摩擦磨损试验机对磨耗套材质进行不同法向载荷与滑动速度下的摩擦磨损试验,分析磨耗套材质的摩擦学行为.结果表明:当载荷由100N增大到350 N时,摩擦因数呈现减小趋势,磨损质量与磨损长度增长,轮廓曲线起伏变大且最大磨痕深度增加,损伤加重;当载荷相同,滑动速度不同情况下,摩擦因数、磨损质量与磨损长度变化不大.采用MATLAB对试验数据进行拟合优化,得到磨损模型,并利用ANSYS进行磨损仿真分析.仿真与试验结果误差在6％以内,验证所得磨损模型的合理性.建立的磨损模型为磨耗套使用寿命仿真预测提供理论与技术支撑.
Abstract
The wear sleeve of the brake beam of railway freight cars is prone to severe wear during use,which affects braking performance and driving safety.In order to study the wear behavior of the wear sleeve material of brake beam,the friction and wear tests were conducted on the pin-disc friction and wear testing machine under different normal loads and sliding speeds to analyze the tribological behavior of the wear sleeve material.The results show that when the load increases from 100 N to 350 N,the friction coefficient decreases,the wear mass loss and wear length increase,the contour curve be-comes more undulating and the maximum wear depth increases,and the damage increases.When the load is the same and the sliding speed is different,the friction coefficient,wear mass and wear length do not change obviously.The wear model was obtained by fitting and optimizing the test data through MATLAB,and the wear simulation analysis was conducted by using ANSYS.The error between simulation and experimental results is within 6％,verifying the rationality of the obtained wear model.The established wear model provides theoretical and technical support for simulating and predicting the service life of wear sleeves.
关键词
磨耗套/制动梁/磨损/制动性能/磨损模型Key words
wear sleeve/brake beam/wear/braking performance/wear model引用本文复制引用
基金项目
四川省区域创新合作项目(2022YFQ0113)
中央高校基本科研业务费专项资金(2682024CG007)
国能铁路装备有限责任公司科技创新项目(TZKY-21-17)
出版年
2024
NETL
NSTL
万方数据