Experiment Study on Fatigue Strength of Used Type Zhuan 8G (Zhuan8AG) Side Frame under the Speed Increased Condition

Abstract:

The using zhuan 8G (zhuan 8AG) bogie in existing line whether can achieve the requirement of speed increased to 120 km/h, and what improvements and research became the railway sector need to face and solve importantly. Based on the experiment standard of new production and strengthened project, fatigue strength performance is studied on type zhuan 8G (zhuan 8AG) side frame used for some years when speed increases to 120 km/h. The static stress examination shows that the static strength of side frame is related to its structural design while has nothing to do with its using life. The fatigue test research indicates that the total state of used side frame is comparatively good, and the foreground used for 120 km/h is optimistic; and find that the corner of pile cap lower part(C position) is the weak site of side frame fatigue failure, the reason is closely related to the surface defect of this site. The recommendation is improving the quality requirements of this part of the side frame manufacturing technology and quality controlling document to eliminate the hidden dangers of fatigue source. Conclusions and suggestions may be referred to when competent departments make relevant decision, and offer contrast for relevant calculation study.

• Periodical: Advanced Materials Research (Volumes 588-589)
• Pages: 230-237
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.588-589.230
• Online since: November 2012
• Authors: Hong Wang, Yue Jin Shang, Wan Xuan Liu
• Keywords: Fatigue Strength, Side Frame, Speed Increase, Test Study, Type Zhuan 8G (Zhuan 8AG)

References

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