基于BS标准与ASME标准的不锈钢地铁车辆车体关键焊缝疲劳强度分析  

Fatigue Strength Analysis of Key Welds on Stainless Steel Metro Vehicle Body Based on BS Standard and ASME Standard

作　　者：李晓峰[1] 崔志军 邰晨晨 LI Xiaofeng;CUI Zhijun;TAI Chenchen(School of Rolling Stock Engineering,Dalian Jiaotong University,116028,Dalian,China;不详)

机构地区：[1]大连交通大学机车车辆工程学院,大连116028 [2]中国铁路沈阳局集团有限公司,沈阳110101

出　　处：《城市轨道交通研究》2020年第10期30-33,共4页Urban Mass Transit

基　　金：国家重点研发计划项目(2017YFB1201303)。

摘　　要：基于子模型技术对某不锈钢地铁车辆一位端牵引梁下盖板与立板连接处的关键焊缝进行研究,并运用BS(英国标准)和ASME(美国机械工程师协会)标准对该条焊缝进行评估。通过评估分析可知:选择合适的焊接接头和焊缝等级是BS标准评估时的重要环节;而准确定义焊缝细节则是ASME标准评估时的重要环节。综合考虑,BS标准评估工作量较小,适合进行整车焊缝的评估;而ASME标准前期定义焊缝的工作量巨大,但避免了人为选择焊接接头及等级这种随机误差,准确性相对较高,适合进行关键焊缝的研究。Based on the sub-model technology,the key welding joints between the lower cover plate and the vertical plate of a stainless steel metro car traction beam are studied,BS standard(British Standard)and ASME(American Society of Mechanical Engineers)standard are used to evaluate the welds.Through evaluation and analysis,it is made clear that the selection of appropriate welding joint and welding grade is an important part in BS standard evaluation;and the accurate definition of welding details is an important part in ASME standard evaluation.Considering comprehensively,the workload of BS standard evaluation is relatively small,therefore is suitable for the evaluation of vehicle welds;while the workload of welding joint definition in ASME standard is huge,but has relatively higher accuracy because it can avoid the random errors of artificial selection of welding joint and grade,therefore is suitable for the research of key welds.

关 键 词：地铁车辆车体 关键焊缝 疲劳强度 BS标准 ASME标准 

分 类 号：U270.6[机械工程—车辆工程] TG405[交通运输工程—载运工具运用工程]