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

Abstract:

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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

Info:

Periodical:

Advanced Materials Research (Volumes 328-330)

Edited by:

Liangchi Zhang, Chunliang Zhang and Zichen Chen

Pages:

1281-1286

DOI:

10.4028/www.scientific.net/AMR.328-330.1281

Citation:

B. J. Wang et al., "Research on the Stress Fatigue Assessment about the Hot Spot Stress on the Bogie Frame", Advanced Materials Research, Vols. 328-330, pp. 1281-1286, 2011

Online since:

September 2011

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Price:

$35.00

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