The Paton Welding Journal, 2000, №06

2000 №06 (11)

2000 №06 (02)

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The Paton Welding Journal, 2000, #6, 2-5 pages

Stress concentration in the areas of corrosion damage of pipelines

E.F. Garf¹, M.A. Netrebsky¹, P.S. Yukhimets¹, S.V. Kobelsky²

¹E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²Institute of Problems of Strength, NASU, Kyiv, Ukraine

Abstract
Finite element method and electric stain measurement means were used to study the concentration of stresses in the zone of corrosion damage of pipelines, simulated by the surface of an ellipsoid and a cylinder. It is shown that these defects can create a risk of cyclic elasto-plastic fracture while the required level of static strength is ensured. An approximate dependence for determination of stress concentration in the zone of surface corrosion damage has been determined more precisely.
Keywords: pipelines, surface defects, finite element method, stress concentration

References

1. Cases of ASME Boiler and Pressure Vessels Code. Case No. 480.
2. (1993) Development of an information-technological system for up-to-date personal computers for investigation of three-dimensional models of thermo-plastic solids in order to determine the thermal-stressed state of elements of mechanical engineering structures at quasi-static impacts. In: R&D report UkrINTEI. Kyiv.
3. Fokin, M.F., Trubitsin, V.A., Nikitina, E.A. (1986) Evaluation of service fatigue life of the main oil pipelines in the defect zone. Moscow: VNIIOENG.

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Suggested Citation

E.F. Garf, M.A. Netrebsky, P.S. Yukhimets, S.V. Kobelsky (2000) Stress concentration in the areas of corrosion damage of pipelines. The Paton Welding J., 06, 2-5.

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