| 2000 №09 (04) | 2000 №09 (06) |
The Paton Welding Journal, 2000, #9, 26-34 pages
Design-technological strength of welded joints of off-shore structures
I.V. Gorynin, A.V. Iliin, V.P. Leonov, V.A. Malyshevsky
Central Research Institute of Structural Materials «Prometey», St.-Petersburg, RussiaAbstract
Problems of assurance of reliability of off-shore engineering structures, which cover a wide range of spheres, are considered. Optimum results are obtained at a constant allowance for a real technology during the process of the structure fabrication. Approaches are described for the selection of materials, a system of safety factors, design of connections and recommendations for additional technological procedures, justification of requirements to the quality of welded joints, improvement of methods of assessment of a brittle strength and a cyclic life.
Keywords: stationary ice-resistant drilling rigs, deepwater apparatuses, welded joints, fatigue life, cyclic strength, crack resistance, requirements to the quality of welded joints
References
1. Gorynin, I.V., Iljin, A.V., Leonov, V.P. et al. (1990) Calculated determination of fatigue life of welded joints with allowance for effect of technological factors. In: Shipbuilding industry. Series Materials Science, Welding. Issue 10, 3 - 14.2. Iljin, A.V., Karzov, G.P., Leonov, V.P. et al (1983) Peculiarities of using the deformation criterion of fracture in assessment of fatigue life of welded joints. In: Problems of shipbuilding. Series Welding. Issue 36, 40 - 46.
3. Gatovsky, K.M., Leonov. V.P., Stahanov. V.I. et. al. (1983) Examination of stressed state oi metal after welding and repair of butt joints with multilayer welds. Avtomaticheskaya Svarka, 6, 37 - 40.
4. Karzov, G.P., Leonov, V.P., Margolin, B.Z. (1992) Calculated determination of fields of residual welding stresses in structures of a shell type. Ibid., 3, 3 - 8.
5. Karzov, G.P., Leonov, V.P., Margolin, B.7. (1992) Calculated determination of fields of residual welding stresses in structures of a shell type. Ibid., 4, 7 - 13.
6. Iljin, A.V., Leonov, V.P. (1992) Model of initial stage of damage for calculated estimation of fatigue life in zones of stress concentration. In. Proc, of XI Int. Colloq. on Mechanical Fatigue of Metals. Kyiv.
7. Danilov, G.I., Leonov, V.P., Zolotov, V.F. et al. (1996) Effectiveness of technological methods of increasing a cyclic life of welded units of ice-resistant stationary drilling rigs. Voprosy Materialovedeniya, 2, 13 - 22.
8. Novozhilov, V.V., Rybakina, O.G. (1985) Examination of propagation of surface cracks at cyclic loads. In: Proc, of XI Int. Colloq. on Mechanical Fatigue of Metals. Kyiv.
9. Danilov, G.I., Leonov, V.P., Malyshevsky, V.A. et al. (1996) Justification of standardized requirements of cold resistance to steel for ice-resistant drilling rigs, used at the Arctic shelf. Voprosy Materialovedeniya, 2. 5 – 14.