A Study on the Fatigue Test of Truck Materials for Railway Vehicles

Abstract:

The truck that is used as running equipment for freight car support is a core structural part that supports the load of the car body and that greatly influences the safety of freights and vehicles, as well as their running performance. The running equipment is composed of truck frames, wheels and wheel axles, independent suspensions, and brakes. Among these components, the truck frame supporting the load of the vehicles and freights may be the most important one. This study was carried out to analyze the structure of truck frames and to determine whether they are safe when the maximum vertical load, breaking load, and front and rear loads are applied to them. This was done by subjecting the truck frames to stress tests and then measuring the stress on each of their parts. Before the load test, a structural-analysis program was used for the stress distribution analysis of the truck frame. To measure the stresses based on the results of the structural analysis, strain gages were attached to the surfaces of truck frames [1].

• Periodical: Key Engineering Materials (Volume 627)
• Pages: 405-408
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.627.405
• Online since: September 2014
• Authors: Sung Cheol Yoon*
• Keywords: Fatigue Limit, Goodman Diagram, Truck, Yield Stress

References

[1] S.C. Yoon, J.G. Kim et al, : Key Engineering Materials, Vols. 488-489(2012), p.210.

[2] Japanese Industrial Standards, Truck Frames for Railway Rolling Stock-General Rules for Design, E 4207(1992).

[3] Japanese Industrial Standards, Test Methods of Static Load for Truck Frames and Truck Bolsters of Railway Rolling Stock, E 4208(1988).

[4] Y.S. Ham, H.C. Chung, et al, A Study on Improvement method of Running Safety for Welded Truck Structure of Railway Freight Car, KRRI Research Report(2004).

[5] Korea Standard Association, General code of design for truck stock for railway rolling stock, 9210(1996).