The Paton Welding Journal, 2009, №06

2009 №06 (09)

2009 №06 (02)

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The Paton Welding Journal, 2009, #6, 2-5 pages

Estimation of growth of fatigue cracks in load-bearing welded structures at random spectrum of cyclic loading

V.I. Makhnenko, I.Yu. Romanova

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Considered is the procedure for estimation of growth of fatigue cracks in reinforcement of one-sided butt weld on a longitudinal beam of freight flat car at the preset range of random cyclic loading. It is shown that sequence of application of the loading spectrum elements has a substantial effect on the fatigue life of a structure. The use of the Monte-Carlo method in calculations allows generating probabilistic characteristics of failure related to random application of cyclic loading.
Keywords: welded structures, freight flat car, fatigue crack, cyclic loading, Monte-Carlo method, probability of failure, amplification factor, estimation of fatigue life

References

1. (1996) Recommendations for fatigue design of welded joints and components. IIXV Doc. XIII-15J9-96/XV-845-96.
2. ISO SD 16708: Petroleum and natural gas industrial. Pipeline transportation system. Reliability-Based Limit State Methods. Introd. Oct. 2000.
3. Sobol, I.M. (1973) Monte-Carlo numerical methods. Moscow: Nauka.
4. (1996) Norms for calculation and design of railway cars of the Ministry of Communications for the 1520 mm track (non-self propelled). Moscow: GosNIlV-VNIIZIil.

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Suggested Citation

V.I. Makhnenko, I.Yu. Romanova (2009) Estimation of growth of fatigue cracks in load-bearing welded structures at random spectrum of cyclic loading. The Paton Welding J., 06, 2-5.

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