| 多轴转向架焊接构架焊缝应力集中分析与寿命研究 |
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| 引用本文： | 谢素明,郝博,邵文东,李向伟. 多轴转向架焊接构架焊缝应力集中分析与寿命研究[J]. 大连交通大学学报, 2014, 35(5): 17-20 |
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| 作者姓名： | 谢素明 郝博 邵文东 李向伟 |
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| 作者单位： | 1. 大连交通大学 交通运输工程学院,辽宁大连,1160282
2. 中国北车集团齐齐哈尔轨道交通装备有限责任公司,黑龙江齐齐哈尔,161002 |
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| 基金项目： | 中国铁路总公司科技研究开发计划资助项目，辽宁省高校创新团队资助项目 |
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| 摘 要： | 利用美国ASME-2007标准中的结构应力法和有限元数值分析技术,研究某多轴转向架焊接构架焊缝结构应力分布规律,指出在垂向斜对称载荷工况作用下构架应力集中发生部位;以降低焊缝应力集中为出发点,对焊接构架结构进行改进设计.构架改进结构后焊缝结构应力幅值降低,疲劳寿命显著提高.
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| 关 键 词： | 多轴转向架 焊接构架 结构应力法 疲劳寿命 |
Stress Concentration Analysis and Fatigue Life Prediction of Weld Line in Multi-Axial Bogie Frame |
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| XIE Suming,HAO Bo,SHAO Wendong,LI Xiangwei. Stress Concentration Analysis and Fatigue Life Prediction of Weld Line in Multi-Axial Bogie Frame[J]. Journal of Dalian Jiaotong University, 2014, 35(5): 17-20 |
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| Authors: | XIE Suming HAO Bo SHAO Wendong LI Xiangwei |
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| Affiliation: | XIE Suming, HAO Bo, SHAO Wendong, LI Xiangwei (1. School of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian 116028, China; 2. China CNR Qiqihar Railway Vehicle (Group) Technology Center Co. , Ltd, Qiqihar 161002, China) |
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| Abstract: | Using structural stress method of ASME-2007 standard and finite element analysis technique, weld line structural stress distribution is studied, and stress concentration regions are pointed out for a multi-axial bogie frame supported to vertical skew symmetric load. The improved structure is to be put forward on the basis of structural stress analysis at weld line. The stress amplitude of these weld lines is decreased and their fatigue life is increased greatly. |
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| Keywords: | multi-axle bogie welded frame structural stress method fatigue life |
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