期刊文献+

基于主S-N曲线法的地铁制动箱焊接疲劳分析 被引量:2

Fatigue analysis of metro brake box based on master S-N curve method
下载PDF
导出
摘要 为研究地铁车辆制动箱焊接接头的疲劳寿命,根据实际结构建立4节点壳单元有限元模型,给出搭接焊和T型焊的焊缝建模方法.在3种振动工况下,运用主S-N曲线法计算焊缝的等效结构应力和对应损伤比.结果表明:该地铁车辆制动箱焊接结构设计合理可靠;通过与实体单元模型计算结果进行对比证明壳单元模拟焊缝的合理性;在不同尺寸单元下对比2种疲劳评估方法,结果表明名义应力法预测疲劳寿命的准确性较低. To study the fatigue life of welded joints of metro vehicle brake box, four-nodes shell finite element is built according to the actual structure, and the modeling methods are given for lap fillet and T shape welds. Under the three kinds of vibration conditions, the equivalent structural stress and the corresponding damage ratio of the weld seam are calculated by the master S-N curve method. The results show that, the design of the metro vehicle brake box is rational and reliable; the comparison of the calculation results with that of the entity unit model proves that the simulation on weld seam using shell elements is rational; the comparison of two different fatigue assessment methods under different size of elements shows that the accuracy of nominal stress method is not high.
作者 孙权 陈秉智
出处 《计算机辅助工程》 2016年第3期47-51,共5页 Computer Aided Engineering
基金 国家自然科学基金(11272070) 铁道部科技研究开发计划(2011J013-E)
关键词 地铁制动箱 焊接接头 疲劳 主S-N曲曲线法 等效结构应力 损伤比 metro brake box welded joint fatigue master S-N curve method equivalent structural stress damage ratio
  • 相关文献

参考文献4

二级参考文献24

  • 1谢素明,程亚军,兆文忠,范国海.货车焊接结构疲劳寿命预测研究[J].铁道车辆,2006,44(6):1-4. 被引量:16
  • 2李晓峰,谢素明,时慧焯,兆文忠.车辆焊接结构疲劳寿命评估方法研究[J].中国铁道科学,2007,28(3):74-78. 被引量:49
  • 3Dong P. A structural stress definition and numerical implementation for fatigue analysis of welded joints[ J]. International Journal of Fatigue, 200, 23 : 865 - 876.
  • 4Dong P, Hong J K. Analysis of recent fatigue data using the structural stress procedure in ASME Div2 rewrite [ J ]. Journal of Pressure Vessel Technology, 2007, 129 : 355 - 362.
  • 5Kyuba H, Dong P. Equilibrium-equivalent structural stress app roach to fatigue analysis of a rectangular hollow section joint[ J]. International Journal of Fatigue, 2005, 27 : 85 - 94.
  • 6AAR Manual of Standards. AAR - M1001 - 2007 design fabrication and construction of freight cars section c part II[ S ]. America: AAR,2007.
  • 7British Standard Institute. BS7608 - 1993 Fatigue design and assessment of steel structures[ S]. British : BSI, 1993.
  • 8IIW Joint Working Group. IIW-XIII1965 - 2003/XV1127 - 2003 IIW document Recommendations for fatigue design of welded joints and components[ S ]. England : IIW/IIS, 2003.
  • 9Fatigue Assessment of Welds-Elastic Analysis and Structural Stress[ M]. ASME Div 2,2007.
  • 10DON G P. A Structural Stress Definition and Numerical Implementation for Fatigue Analysis of Welded Joints [ J]. International Journal of Fatigue , 2001 , 23 (10) : 865 -2876.

共引文献88

同被引文献12

引证文献2

二级引证文献6

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部