| 钢轨焊接接头最危险应力确定 |
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| 引用本文： | 许玉德,周宇.钢轨焊接接头最危险应力确定[J].同济大学学报(自然科学版),2003,31(2):170-173. |
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| 作者姓名： | 许玉德 周宇 |
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| 作者单位： | 同济大学沪西校区,铁道建筑工程系,上海,200331 |
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| 基金项目： | 上海市高校青年科学基金资助项目 (99Q0 48) |
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| 摘 要： | 采用了车辆 -轨道耦合动力学模型进行焊接接头轮轨动力计算 ,建立了钢轨外形尺寸模型 .结合线路实际条件 ,以此作为参数 ,建立了钢轨焊接接头有限元模型 ,并进行了有限元分析 ,得到了焊接接头弯曲应力分布和钢轨变形情况 .得出的结论是钢轨焊接接头在轨腰和轨底连接处是应力集中的区域 .分析结果和日本新干线无缝线路钢轨焊接接头寿命预测的实验结果吻合
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| 关 键 词： | 钢轨焊接接头 有限元方法 轮轨动力响应 |
| 文章编号： | 0253-374X(2003)02-0170-04 |
| 修稿时间： | 2002年10月30 |
Computer Simulation Analyses of Rail Welding Joint |
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| XU Yu-de,ZHOU Yu.Computer Simulation Analyses of Rail Welding Joint[J].Journal of Tongji University(Natural Science),2003,31(2):170-173. |
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| Authors: | XU Yu-de ZHOU Yu |
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| Abstract: | This paper used the vehicle-track coupling dynamic model to calculate the rail-wheel dynamic response,established a rail profile model,and built a FEM model of the rail welding joint under the real track condition.Analyses were made with this model.The stress distribution in the welding joint and the rail deformation trend were displayed.It was concluded that the stress concentration occurred at the connection of rail web and rail flange.The results checked with those from Japan Shinkanshen CWR welding joint. |
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| Keywords: | rail welding joint finite element method rail-wheel dynamic response |
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