Research on the Stress Fatigue Assessment about the Hot Spot Stress on the Bogie Frame
As the loading conditions for the railway vehicles are becoming more and more complex, nominal stress has been unable to fully satisfy the requirements for assessing fatigue strength for weld structures. Hot spots stress is much more closer to the actual stress of a weld structure, it can suit the demand of high speed trains fatigue evaluation better. In this paper, on the basis of UIC615-4 standard, the nominal stress of the welded bogie frame was calculated and its fatigue strength was assessed using FEA method. Also, set the joint section between drawbar seat and the transom bottom flange as the object of the study, succeeded in evaluating the hot spot stress of the welded bogie frame. Compared the hot spot stress calculation result with the nominal stress from shell elements, the result shows that hot spot stress is higher than the nominal stress. Using the hot spot stress to assess fatigue has the higher reliability
Hot spot stress Fatigue assessment Bogie FEA
Wang Binjie Li Qiang Liu Zhiming
Engineering Research Center of Structure Reliability and Operation Mesurement Technology of Rail Guided Vehicles,Beijing Jiaotong University, China Ministry of Education, Beijing, 100044, China
国际会议
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
广州
英文
1281-1286
2011-11-18（万方平台首次上网日期，不代表论文的发表时间）