[1]赵峰强,张开林,刘斌.出口缅甸3B0机车焊接构架疲劳寿命预测[J].机车电传动,2017,(01):51-54.[doi:10.13890/j.issn.1000-128x.2017.01.102]
 ZHAO Fengqiang,ZHANG Kailin,LIU Bin.Fatigue Life Prediction of Welded Frame of 3B0 Locomotive Exported to Burma[J].Electric Drive for Locomotives,2017,(01):51-54.[doi:10.13890/j.issn.1000-128x.2017.01.102]
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出口缅甸3B0机车焊接构架疲劳寿命预测()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2017年01期
页码:
51-54
栏目:
研究开发
出版日期:
2017-01-10

文章信息/Info

Title:
Fatigue Life Prediction of Welded Frame of 3B0 Locomotive Exported to Burma
文章编号:
1000-128X(2017)01-0051-04
作者:
赵峰强1张开林2刘斌 2
(1. 中车四方车辆有限公司产品开发部,山东 青岛 266031; 2. 西南交通大学牵引动力国家重点实验室,四川 成都 610031)
Author(s):
ZHAO Fengqiang1 ZHANG Kailin2 LIU Bin2
( 1. Product Development Department, CRRC Sifang Co., Ltd., Qingdao, Shandong 266031,China; 2. Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu, Sichuan 610031, China )
关键词:
机车构架焊接接头疲劳寿命名义应力法缺口应力法3B0 机车
Keywords:
locomotive frame welded joints fatigue life nominal stress method notch stress method 3B0 Locomotive
分类号:
U260.331;TG405
DOI:
10.13890/j.issn.1000-128x.2017.01.102
文献标志码:
A
摘要:
为了对出口缅甸3B0 机车转向架焊接构架的疲劳寿命进行预测,采用有限元方法对构架在不同疲劳载荷下的应力状态进行分析,确定了箱体梁中主焊缝的多种疲劳应力范围。基于IIW 标准和相关文献中焊接接头疲劳寿命数据确定了评估焊接构架的多条S-N 曲线方程,在此基础上采用整体名义应力法和局部缺口应力法计算了关键主焊缝的寿命次数。结果表明:所有焊缝的寿命次数均大于2×106 次,满足轨道车辆焊接接头设计标准要求;其中构架侧梁T 型角接头在垂向动载作用下寿命较低,应通过焊缝磨削处理降低其应力集中程度。由于名义应力
Abstract:
In order to predict the fatigue life of the welded frame of 3B0 locomotive exported to Burma, the stress state of welded frame under different fatigue loading cases by FEM was analyzed, and then the fatigue stress ranges of main welds in box girders were determined. Based on IIW standard and fatigue test data in relevant literature, several S-N curve equations of welded joints for assessing the fatigue strength of welded frame was obtained, then the life cycles of some key welds were calculated by using both global nominal stress method and local notch stress method. The result indicated that the fatigue life cycles of all welds were greater than 2 million, which met the requirements of welded joint design standard for rail vehicle; As the T joint in frame’s side beam under vertical dynamic loads had low life cycles, it should reduce the local stress concentration by weld grinding. Normal stress method generally was partial to be conservative, so it had more advantages by using notch stress method for fatigue life prediction of welded structure from the perspective of structural light weight and local optimization.

参考文献/References:

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相似文献/References:

[1]赵峰强,张开林,刘 斌. 出口缅甸3B0 机车焊接构架疲劳寿命预测[J].机车电传动,2017,(01):1.[doi:10.13890/j.issn.1000-128x.2017.01.102]
 ZHAO Fengqiang,ZHANG Kailin,LIU Bin. Fatigue Life Prediction of Welded Frame of 3B0 Locomotive Exported to Burma[J].Electric Drive for Locomotives,2017,(01):1.[doi:10.13890/j.issn.1000-128x.2017.01.102]

备注/Memo

备注/Memo:
作者简介:赵峰强(1983-),男,高级工程师,从事机车车辆转向架设计工作。
更新日期/Last Update: 2017-01-10