驼峰车辆减速器疲劳强度仿真与试验研究  

Simulation and Experimental Study on Fatigue Strength of Hump Car Retarder

作　　者：胡淼 HU Miao(Signal&Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;National Research Center of Railway Intelligent Transport System Engineering Technology,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司通信信号研究所,北京100081 [2]国家铁路智能运输系统工程技术研究中心,北京100081

出　　处：《机械设计与制造》2020年第3期99-102,106,共5页Machinery Design & Manufacture

基　　金：减速器设备健康状态智能监测的研究(J2018G003);适应重载货车的分散控制车辆减速器研究(2018YJ073);减速器设备健康状态智能监测的研究(2018HT22)。

摘　　要：采用Pro/E三维设计软件,建立了车辆减速器制动钳组件的有限元分析模型,提出基于RANSAC算法的加载条件计算方法,并与基于附加制动力系数的加载条件计算方法进行对比,指出了两种算法下的应力集中区域以及应力分布和变形情况。同时,对在不同质量的货运车辆通过车辆减速器时,制动钳的疲劳强度进行仿真。通过现场应力试验和现场作业数据分析,得到车辆减速器制动钳实际的应力数据,以及车辆质量对制动钳疲劳寿命的影响。结果表明,基于RANSAC算法的加载条件计算方法更能反映车辆减速器制动钳实际受力情况;货运车辆中大质量车辆数量越多,制动钳越容易发生疲劳损坏。The finite element analysis model of the car retarder brake caliper component has been established by Pro/E software. The calculation method of loading condition based on RANSAC algorithm is proposed and compared with the method based on additional braking force coefficient,which reflects the region of stress concentration,stress distribution and deformation. At the same time,the fatigue strength of the car retarder brake caliper is simulated when the freight cars of different qualities pass through the car retarder. Through the field stress test and operation data analysis,the actual stress data of the brake caliper and the influence of the car quality on the fatigue life of the brake caliper are obtained. The calculation method of loading condition based on RANSAC algorithm could better reflect the actual force of the car retarder brake caliper.the brake caliper is usually damaged,while many large-quality cars pass through.

关 键 词：车辆减速器 有限元模型 RANSAC算法 应力试验 

分 类 号：TH16[机械工程—机械制造及自动化] U284.63[交通运输工程—交通信息工程及控制]