| 基于ASME标准的机车制动闸瓦托焊接疲劳分析 |
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| 引用本文： | 孙屹博,高峰,杨鑫华.基于ASME标准的机车制动闸瓦托焊接疲劳分析[J].大连交通大学学报,2014(4):65-68,101. |
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| 作者姓名： | 孙屹博 高峰 杨鑫华 |
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| 作者单位： | [1]大连交通大学动车运用与维护学院,辽宁大连116028 [2]大连交通大学材料科学与工程学院,辽宁大连116028 |
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| 基金项目： | 国家自然科学基金资助项目（5117504）;教育部科学技术研究重点项目资助（210045）;辽宁省科学技术计划资助项目（2011220039） |
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| 摘 要： | 以ASME标准中的基于等效结构应力的主S-N曲线法对闸瓦托结构中的14条焊缝疲劳寿命进行分析.建立闸瓦托有限元模型,根据实际制动工况分析其承载载荷,计算制动过程中焊缝区域的应力分布,基于等效结构应力算法将应力进行转换,进而求解各条焊缝在实际工况载荷的疲劳寿命,并对疲劳寿命较低的危险焊缝进行预测及分析,结果表明该闸瓦托分别存在两条对称的主要危险焊缝和两条对称的次级危险焊缝.
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| 关 键 词： | 闸瓦托 焊接 疲劳寿命 主S-N曲线法 |
Fatigue Analysis of Weld Locomotive Brake Shoe Based on ASME Standard |
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| SUN Yi-bo,GAO Feng,YANG Xin-hua.Fatigue Analysis of Weld Locomotive Brake Shoe Based on ASME Standard[J].Journal of Dalian Jiaotong University,2014(4):65-68,101. |
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| Authors: | SUN Yi-bo GAO Feng YANG Xin-hua |
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| Institution: | 1. School of EMU Utilization and Maintenance, Dalian Jiaotong University, Dalian 116028, China; 2. School of Material Scienee and Engineering, Dalian Jiaotong University, Dalian 116028, China) |
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| Abstract: | Fatigue life of 14 welding line in the brake shoe were analyzed based on master S-N curve method of equivalent structural stress in ASME standard.Finite element model of brake shoe was established,and the stress distribution in welding line was calculated according to the braking load in actual braking process.Then the stress was transformed based on equivalent structural stress method,and the fatigue life of welding line was estimated.The dangerous welding lines with lower fatigue life were analyzed,and the results show that there are two symmetrical primary and secondary dangerous welding lines in the brake shoe. |
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| Keywords: | brake shoe welding fatigue life the master S-N curve method |
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