Research on the Stress Fatigue Assessment about the Hot Spot Stress on the Bogie Frame

Abstract:

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

• Periodical: Advanced Materials Research (Volumes 328-330)
• Pages: 1281-1286
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.328-330.1281
• Online since: September 2011
• Authors: Bin Jie Wang, Qiang Li, Zhi Ming Liu
• Keywords: Bogie, Fatigue Assessment, Finite Element Analysis (FEA), Hot Spot Stress

References

[1] Xiang Bin. Plotting and Application of Goodman Fatigue Limit Diagram of Railway Common Materials. Beijing. CHINA RAILWAY SCIENCE. 2002. 23(4): 72-76.

[2] Hobbacher A. Stress intensity factors of welded joints. Eng Fract Mech 1993. 46(2): 173~82.

[3] Hobbacher A. Stress intensity factors of welded joints. Eng Fract Mech 1993. 49(2): 323.

[4] Van Wingerde AM, Packer JA, Wardenier J. Criteria for the fatigue assessment of hollow structural section connections. Journal of Construction and Steel Research. 1995. (35): 71~115.

DOI: 10.1016/0143-974x(94)00030-i

[5] Niemi E, Marquis G. Introduction to the structural stress approach to fatigue analysis of plate structures[C]. Proceedings of the IIW Fatigue Seminar. Tokyo Institute of Technology. 2002. 73~90.

[6] Fricke, W., Kahl, A. Comparison of different structural stress approaches forfatigue assessment of welded ship structures[J]. Marine Structures 18, 473–488.

DOI: 10.1016/j.marstruc.2006.02.001

[7] Ha, C.I. A study on the fatigue strength of welded joints using structural stress with consideration of stress singularity and its application to the fatigue life assessment of ship structures[J]. M. Sc. thesis, Pusan National University, Busan, Korea.

[8] Kang, H.T., Dong, P., Hong, J.K. Fatigue analysis of spot welds using a mesh-insensitive structural stress approach[J]. International Journal of Fatigue 29, 1546–1553.

DOI: 10.1016/j.ijfatigue.2006.10.025

[9] Niemi, E., Fricke, W., Maddox, S.J. Fatigue Analysis of Welded Components[S]. IIW Doc IIW143000, International Institute of Welding.

[10] Myung Hyun Kim , Seong Min Kim , Young Nam Kim , etal. A comparative study for the fatigue assessment of a ship structure by use of hot spot stress and structural stress approaches[J]. Ocean Engineering 36 (2009) 1067–1072.

DOI: 10.1016/j.oceaneng.2009.07.001

[11] Wang BJ, Li Q, Liu ZM. Study on Fatigue Strength Evaluation of Steel Welded Joint by Hot Spot Stress Method. PROGRESS IN SAFETY SCIENCE AND TECHNOLOGY. (2008).