The Paton Welding Journal, 2014, №10



2014 №10 (05)

DOI of Article 10.15407/tpwj2014.10.06

2014 №10 (07)

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The Paton Welding Journal, 2014, #10, 30-34 pages  

FATIGUE CALCULATION FOR WELDED JOINTS OF BEARING ELEMENTS OF FREIGHT CAR BOGIE

L.M. LOBANOV, O.V. MAKHNENKO, G.Yu. SAPRYKINA and A.D. PUSTOVOJ

E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
 
 
Abstract
Statistics of accident rate at Ukrainian and Russian railways is an evidence of increase in the recent years of the accidents, related with failure of cast bearing elements of two-axle three-component freight car bogies. Analysis of service reliability of cast structures of side frame and bolster of 18-100 type bogie shows that appearance of fatigue cracks is the main reason of reject. It is reasonable to search an alternative application of welding technologies in manufacture of indicated parts from sheet products for the purpose of increase of their safety and survivability. It is shown that existing Norms for designing of welded joints and assemblies of railway cars significantly overstate real cyclic load resistance of welded joints in comparison with the Recommendations of the International Institute of Welding. This disadvantage is typical for number of reference documents acting in Russia and Ukraine, which regulate calculation of fatigue resistance of welded joints and assemblies. This promotes negative results in designing with respect to required life of welded elements. Development of safe and technological welded elements of freight car bogie requires application of the recent achievements in the field of fatigue strength of welded joints. 13 Ref., 4 Tables.
 
 
Keywords: welded structures, welded joint, freight car, three-element bogie, side frame, frame failure, fatigue resistance, stress amplitude
 
 
Received:                02.06.14
Published:               28.10.14
 
 
References
1. Pranov, V.A. (2012) Increase of fatigue life of side frame of freight car bogie: Syn. of Thesis for Cand. of Techn. Sci. Degree. Ekaterinburg: UralGURS.
2. Sokolov, A.M. (2012) About formation of complex program of research on problem of side frame fractures of freight car bogies. Byull. Obied. Uch. Soveta OAO RZhD, 3, 3-11.
3. Makhnenko, O.V., Saprykina, G.Yu., Mirzov, I.V. et al. (2014) Prospects for development of load-carrying elements of freight car bogie. The Paton Welding J., 3, 33-38. https://doi.org/10.15407/tpwj2014.03.06
4. Volkov, V.A., Chepurnoj, A.D., Bubnov, V.M. et al. Two-axle bogie for freight cars. Pat. 2275308 RU. Publ. 27.04.2004.
5. Khominich, V.S., Trojnikov, M.A., Bogdanov, V.P. Side frame of freight car bogie. Cert. on utility model 37683 U1 RU . Publ. 10.05.2004.
6. Dejneko, S.Yu., Prikhodko, V.I., Bondar, N.A. et al. Two-axle bogie of freight car. Pat. 2246416 C2 RU. Int. Cl. K7 B61F5. Publ. 20.06.2004.
7. http://www.nvc-vagon.ru
8. Sharapov, A.A., Goloviznin, B.L., Malykh, N.A. et al. Freight car bogie, side frame and bolster of freight car bogie. Pat. 2373091 C2 RU. Int. Cl. K7 B61F5. Fil. 04.10.2007. Publ. 20.11.2009.
9. (1995) Norms of calculation and design of 1520 mm track railway cars of Ministry of Railways (non-self-propelled). Moscow: GosNIIV-VNIIZhT.
10. (2006) Recommendations for fatigue design of welded joints and components. IIW Doc. XIII-1965r14-03/XV-1127r14-03.
11. (2011) DBN V.2.6-163:2010: Structures of constructions and buildings. Steel structures. Standards of design, production and assembly. Kyiv: Minregionbud of Ukraine.
12. Volkov, V.A., Chepurnoj, A.D., Bubnov, V.M. et al. Two-axle bogie for freight cars. Pat. 2275308 RU. Int Cl. K7 B61F5/38; B61F5/26; B61F5/12; B61F3/02. Publ. 27.04.2004.
13. Makhnenko, V.I., Garf, E.F., Rimsky, S.T. et al. (2006) Welded freight bogie bolster project. The Paton Welding J., 4, 2-8.

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Suggested Citation

L.M. Lobanov, O.V. Makhnenko, G.Yu. Saprykina And A.D. Pustovoj (2014) FATIGUE CALCULATION FOR WELDED JOINTS OF BEARING ELEMENTS OF FREIGHT CAR BOGIE. The Paton Welding J., 10, 30-34.

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