动车组转向架焊接构架疲劳强度设计标准研究  

Study on Fatigue Strength Design Standard of Welded Frame For Emu Bogie

作　　者：陈璨 CHEN Can(Locomotive&Car Research Institute,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机车车辆研究所,北京100081

出　　处：《铁道机车车辆》2024年第4期9-19,共11页Railway Locomotive & Car

基　　金：中国国家铁路集团有限公司科技研究开发计划系统性重大项目(P2020J024)。

摘　　要：对比分析了EN 13749、JIS E 4207、TB/T 3548和TB/T 3549.1标准对动车组转向架构架强度设计载荷的规定。分析了ERRI B 12/RP 17报告、JIS E 4207标准和DVS 1612标准提出的结构疲劳强度分析方法。在不同框架下分析了CR400BF动车组动力转向架的疲劳强度。分析结果表明:在EN/ERRI和JIS框架下进行分析,所获得的结构疲劳强度薄弱区域一致。所考察区域的应力均值由垂向载荷决定,在不同框架下获得的节点应力均值差异较小。JIS方法基于动载荷作用下的绝对值最大主应力计算循环应力幅,获得的循环应力幅显著大于基于ERRI方法获得的结果。在JIS框架下进行分析,节点材料利用率数值较大,分析结果偏于保守。The provisions of EN 13749,JIS E 4207,TB/T 3548 and TB/T 3549.1 on the strength design load of the EMU bogie frame were compared and analyzed.The structural fatigue strength analysis methods are analyzed based on the proposals in ERRI B 12/RP 17 report,JIS E 4207 standard and DVS 1612 standard.Taking the power bogie frame of CR400BF EMU as the object,its structural fatigue strength was analyzed under different frameworks.The analysis results show that the weak areas of structural fatigue strength obtained by the analysis under the EN/ERRI and JIS frameworks are consistent.The mean stress of the investigated area is determined by the vertical load,and the average difference stress obtained under different frames is small.The JIS method calculates the stress amplitude based on the absolute maximum principal stress under dynamic load,and the obtained stress amplitude is significantly larger than that obtained based on the ERRI method.In the analysis under the JIS framework,the degree of utilization is relatively large,and the analysis results are conservative.

关 键 词：动车组 转向架 构架 疲劳强度 标准 

分 类 号：U260.331[机械工程—车辆工程]