B型地铁转向架构架疲劳强度分析及试验研究  

Fatigue Strength Analysis and Experimental Research of B-Type Subway Bogie Frame

作　　者：张明 智鹏鹏 霍鑫龙 米莉艳 ZHANG Ming;ZHI Peng-peng;HUO Xin-long;MI Li-yan(Technology Research Center,CRRC Tangshan Co.,Ltd.,Hebei Tangshan 063035,China;Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Zhejiang Huzhou 313001,China;School of Mechanical Engineering,Dalian Jiaotong University,Liaoning Dalian 116028,China;Institute of Electronic and Information Engineering in Guangdong,University of Electronic Science and Technology of China,Guangdong Dongguan 523808,China)

机构地区：[1]中车唐山机车车辆有限公司技术研究中心,河北唐山063035 [2]电子科技大学长三角研究院(湖州),浙江湖州313001 [3]大连交通大学机械工程学院,辽宁大连116028 [4]电子科技大学广东电子信息工程研究院,广东东莞523808

出　　处：《机械设计与制造》2023年第3期110-115,共6页Machinery Design & Manufacture

基　　金：广东省基础与应用基础研究基金(2021A1515110308);国家重点研发计划(2016YFB1200505-003)。

摘　　要：基于有限元分析与动应力试验结合的研究方式,提出一种以利用率为判据的疲劳强度评估方法。首先,依据EN13749及UIC615-4标准对转向架构架进行疲劳强度分析,计算构架结构材料利用率;其次,根据材料利用率确定动应力试验布点方案,进而对构架进行动应力试验,将试验所得的应力-时间历程转化为等效应力幅,并计算等效应力利用率;最后,基于两种利用率和Miner疲劳累计损伤法则评估转向架构架疲劳性能。研究结果表明:材料利用率可为动应力试验布点方案提供良好的理论参考,等效应力利用率可佐证有限元分析的正确性,综合两种利用率能够更精确的评估转向架构架疲劳强度。Based on the research method of simulation analysis and dynamic stress test,a method of fatigue strength assessment is proposed with utilization rate as the evaluation standard. First,the strength analysis of bogie frame is analyzed according to EN13749 and UIC615-4,and the material utilization rate of the frame is calculated. Secondly,the distribution of the measurement points of the dynamic stress test was determined according to the material utilization. The obtained stress-time history is transformed into the equivalent stress amplitude and the equivalent stress utilization rate is calculated. Finally,the fatigue performance of bogie frame is evaluated based on two utilizations and the Miner fatigue cumulative damage. The results show that the material utilization rate can provide a theoretical reference for the dynamic stress test placement scheme,the equivalent stress utilization rate can support the correctness of the simulation analysis,and the fatigue strength of the bogie frame can be more accurately evaluated by combining the two utilization rates.

关 键 词：转向架构架 仿真分析 动应力试验 疲劳强度 利用率 

分 类 号：TH16[机械工程—机械制造及自动化] U271.92[机械工程—车辆工程]