[1]郑李雄,米彩盈.机车车体典型焊接接头应力分析[J].机车电传动,2015,(03):39-42.[doi:10.13890/j.issn.1000-128x.2015.03.010]
 ZHENG Lixiong,MI Caiying.Stress Analysis of Typical Welded Joints for Locomotive Body[J].Electric Drive for Locomotives,2015,(03):39-42.[doi:10.13890/j.issn.1000-128x.2015.03.010]
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机车车体典型焊接接头应力分析()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2015年03期
页码:
39-42
栏目:
研究开发
出版日期:
2015-05-10

文章信息/Info

Title:
Stress Analysis of Typical Welded Joints for Locomotive Body
文章编号:
1000-128X(2015)03-0039-04
作者:
郑李雄米彩盈
西南交通大学 机械工程学院,四川 成都 610031
Author(s):
ZHENG Lixiong MI Caiying
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
关键词:
机车车体典型焊接接头单元类型应力分析有限元法
Keywords:
locomotive body typical welded joints element type stress analysis finite element method
分类号:
U260.2
DOI:
10.13890/j.issn.1000-128x.2015.03.010
文献标志码:
A
摘要:
为解决近年来在采用壳单元的重载机车车体结构强度分析中,牵引梁与中梁过渡区域焊接接头的理论分析结果与试验结果存在较大差异这一问题,提出将车体主体结构离散为壳单元,分别采用壳单元和实体单元离散牵引梁与中梁的过渡区域。基于机车的运用工况,确定车体在纵向压缩和拉伸载荷作用下的理论应力分布并与试验结果进行对比,研究壳单元和实体单元对典型焊接接头应力分布的影响,并对该区域的局部结构进行优化。分析结果表明:在典型焊接接头区域,实体单元比壳单元具有更高的计算精度,且与试验结果吻合度较高;采用实体单元能更准确地模
Abstract:
In recent years, there was a big difference between the theoretical results and experimental results of typical welded jointsof the transition zone of draft beam and the center beam in the structural analysis of heavy-loaded locomotive body when using the shellelements. In order to solve this problem, it was presented that using the shell element and solid element to disperse typical welded joints ofthe transition zone of draft beam and the center beam. Based on the operation conditions of locomotive, the theoretical stress distributionof longitudinal compressive and tensile load cases were decided, which were also compared with the experimental results. Effect of shelland solid element for the stress distribution of typical welded joint was studied; the region’s local structure had also been optimized. Theresults show as follows: in the typical weld joint area, solid element have a more precise calculation than the shell element, and has a highdegree of agreement with the experimental results; using the solid element can accurately simulate the stress distribution of high stressconcentration welded joints.

参考文献/References:

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[1]王 璐,肖守讷,朱 涛,等.160 km/h 电力机车车体轻量化研究[J].机车电传动,2015,(03):35.[doi:10.13890/j.issn.1000-128x.2015.03.009]
 WANG Lu,XIAO Shoune,ZHU Tao,et al.Research on Weight Lightening of 160 km/h Electric Locomotive Body[J].Electric Drive for Locomotives,2015,(03):35.[doi:10.13890/j.issn.1000-128x.2015.03.009]

备注/Memo

备注/Memo:
作者简介:郑李雄(1989-),男,硕士研究生,研究方向为铁道车辆结构疲劳强度。
更新日期/Last Update: 2015-06-30