[1]安 琪,等.基于多轴准则的焊接构架疲劳强度分析方法[J].机车电传动,2019,(01):72-77.[doi:10.13890/j.issn.1000-128x.2019.01.015]
 AN Qi,ZHAO Hua,et al.Fatigue Strength Analysis Method for Welded Frame Based on Multiaxial Criteria[J].Electric Drive for Locomotives,2019,(01):72-77.[doi:10.13890/j.issn.1000-128x.2019.01.015]
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基于多轴准则的焊接构架疲劳强度分析方法()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2019年01期
页码:
72-77
栏目:
研究开发
出版日期:
2019-01-10

文章信息/Info

Title:
Fatigue Strength Analysis Method for Welded Frame Based on Multiaxial Criteria
文章编号:
1000-128X(2019)01-0072-06
作者:
安 琪1 2赵 华2刘志远3王绪英3
(1.西南交通大学 力学博士后科研流动站,四川 成都 610031; 2.西南交通大学 力学与工程学院,四川 成都 610031; 3.中车长春轨道客车股份有限公司 国家轨道客车系统集成工程技术研究中心,吉林 长春 130062)
Author(s):
AN Qi 1 2 ZHAO Hua2 LIU Zhiyuan3 WANG Xuying3
( 1. Mechanics Post-doctoral Research Station, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 3. National Engineering Technology and Res
关键词:
转向架焊接构架焊缝坐标系疲劳强度多轴疲劳准则
Keywords:
bogie welded frame weld coordinate fatigue strength multi-axial fatigue criteria
分类号:
U260.331+.8;U270.331
DOI:
10.13890/j.issn.1000-128x.2019.01.015
文献标志码:
A
摘要:
根据节点几何特征,提出焊缝坐标系的建立方法,计算节点在焊缝坐标系下的应力分量。参照DVS 1612标准,提出基于多轴准则的结构疲劳强度分析方法。对地铁车辆转向架焊接构架典型焊缝的疲劳强度进行评估,指出所研究焊缝的疲劳强度主要受正应力分量的影响,剪应力对结构疲劳强度的影响较小。对比研究了不同分析方法下的节点材料利用度特征。结果表明,在压缩应力占主导的区域,基于多轴准则的分析方法将使评估结果偏于安全;对于抗疲劳能力较差的接头,基于多轴准则的分析方法,采用DVS 1612标准提供的疲劳曲线将获得偏于保守的计算结果。
Abstract:
According to the geometrical characteristics of the nodes, the method of establishing the weld coordinate system was proposed, and the stress components of each node in the weld coordinate system were calculated. Referring to the standard DVS 1612, a structural fatigue strength analysis method based on multi-axial criteria was proposed. The fatigue strength of the typical welds in the welded frame of metro bogie was evaluated. It was pointed out that the fatigue strength of the studied welds was mainly affected by the normal stress components, and the shear stress had little effect on the structural fatigue strength. The characteristics of node material availability under different analysis methods were compared. The results showed that in the area dominated by compressive stress, the analysis methods based on multi-axial criteria would make the assessment results safety. For joints with lower fatigue resistance, based on the analysis method of the multi-axial criterion, conservatively calculated results would be obtained according to the fatigue curves provided by the DVS 1612 standard.

参考文献/References:

[1]ERRI. Programme of tests to be carried out on wagons with steel underframe and body structure (suitable for being fitted with the automatic buffing and draw coupler) and on their cast steel frame bogies[M]. 9th ed. Utrecht:European Rail Research Institute, 2012.
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[5]安琪. 高速动车组转向架柔性构架动态特性研究[D]. 成都:西南交通大学,2013.
[6]LU Y H, ZENG J, WU P B, et al. Research on multi-axial fatigue strength assessment of railway vehicle bogie frame[C]//Proceeding-2010 International conference on system science, engineering design and manufacturing informatization. Yichang:ICSEM 2010,2010:306-309.
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[8]Gestaltung und Dauerfestigkeitsbewertung von Schwei?verbindungen mit St?hlen im Schienenfahrzeugbau:DVS 1612:2014[S].
[9]HOBBACHER A F. Recommendations for fatigue design of welded joints and components[M]. Switzerland:Springer International Publishing, 2016.
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备注/Memo

备注/Memo:
作者简介:安 琪(1983—),男,博士,从事轨道车辆设计理论及车辆承载结构疲劳强度研究工作。
更新日期/Last Update: 2019-01-10