轮轨滑动磨损对应力和温度影响的研究OA北大核心
Research on the Influence of Wheel-rail Sliding Wear on Stress and Temperature
列车在启动、制动或通过曲线轨道、长大下坡道时,轮轨之间将出现滑动接触,这种现象在地铁中较为常见.滑动接触引起的磨损对接触区域应力和温度有着显著影响.根据数值计算方法和摩擦传热理论,建立轮轨接触磨损模型和摩擦传热模型,引入与磨损相关的接触应力,采用移动热源模拟轮轨之间的摩擦热,考虑温度对材料参数的影响,研究滑动磨损对应力和温度的影响.结果显示,随着滑动距离的增加,轮轨接触斑面积逐渐变大,接触应力从尖凸状变为扁平状,最大接触应力逐渐减小,接触应力分布…查看全部>>
Sliding contact between wheel and rail will occur when the train is starting,braking,or passing through curved tracks and long-heavy down grades.In subways,the sliding contact is more frequent.The wear caused by sliding contact has a significant effect on the stress and friction heat of contact region.According to the numerical calculation method and friction heat transfer theory,a wheel-rail contact wear model and a friction heat transfer model are establis…查看全部>>
魏云鹏;吴亚平
青海大学土木工程学院,西宁 810000||兰州交通大学土木工程学院,兰州 730070兰州交通大学土木工程学院,兰州 730070
交通运输
轮轨滑动接触磨损摩擦热接触应力移动热源温度
wheel-rail sliding contactwearfriction heatcontact stressmoving heat sourcetempera-ture
《铁道标准设计》 2024 (6)
72-76,85,6
青海省基础研究计划课题(2022-ZJ-960Q)
评论