Probabilistic ultimate strength analysis of submarine pressure hulls
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
This paper examines the application of structural reliability analysis to submarine pressure hulls to clarify the merits of probabilistic approach in respect thereof. Ultimate strength prediction methods which take the inelastic behavior of ring-stiffened cylindrical shells and hemi-spherical shells into account are reviewed. The modeling uncertainties in terms of bias and coefficient of variation for failure prediction methods in current design guidelines are defined by evaluating the compiled experimental data. A simple ultimate strength formulation for ring-stiffened cylinders taking into account the interaction between local and global failure modes and an ultimate strength formula for hemispherical shells which have better accuracy and reliability than current design codes are taken as basis for reliability analysis. The effects of randomness of geometrical and material properties on failure are assessed by a prelimnary study on reference models. By evaluation of sensitivity factors important variables are determined and comparesons are made with conclusions of previous reliability studies.
Abstract
This paper examines the application of structural reliability analysis to submarine pressure hulls to clarify the merits of probabilistic approach in respect thereof. Ultimate strength prediction methods which take the inelastic behavior of ring-stiffened cylindrical shells and hemi-spherical shells into account are reviewed. The modeling uncertainties in terms of bias and coefficient of variation for failure prediction methods in current design guidelines are defined by evaluating the compiled experimental data. A simple ultimate strength formulation for ring-stiffened cylinders taking into account the interaction between local and global failure modes and an ultimate strength formula for hemispherical shells which have better accuracy and reliability than current design codes are taken as basis for reliability analysis. The effects of randomness of geometrical and material properties on failure are assessed by a prelimnary study on reference models. By evaluation of sensitivity factors important variables are determined and comparesons are made with conclusions of previous reliability studies.
참고문헌 (30)
- ABS, "Rules for building and classing underwater vehicles, systems and hyperbaric facilities", Houston, USA, ~ (2002)
- Hydrostatic pressure buckling of a ring-stiffened tube, "Bryant, A. R.", Naval Construction Research Establishment, ~, pp.Report R-306 (1954)
- BSI, "PD 5500: Specification for Unfired Fusion Welded Pressure Vessels. London, UK", ~ (2009)
- Cho, S.R, "Strength formulation for ring-stiffened cylinders under combined axial loading and radial pressure", Journal of Constructional Steel Research, 9(1), pp.3~34 (1988)
- Cho, S. R., "Derivation of ultimate strength formulation for ring-stiffened conical shell of pressure vessels", Proceedings of the Annual Spring meeting of SNAK. Chungmu, Korea, pp.1129~1135 (2004)
- Cho, S. R., "Ultimate strength formulation of submarine hemispheres", Proceedings of the 25th Asian-Pacific Technical Exchange Meeting on Marine Structure. Incheon, Korea, pp.641~648 (2011)
- Das, P. K., "Reliability based design of submarine structures", Proceedings of the 17th International Conference on Offshore Mechanics and Arctic Engineering. Lisbon, Portugal (1998)
- Das, P. K., "Selection of robust strength models for efficient design of ring and stringer stiffened cylinders under combined loads", Proceedings of the 11th International Conference on Offshore Mechanics and Arctic Engineering. Calgary, Canada, pp.417~428 (1992)
- Das, P. K., "Structural reliability modelling of stiffened components of floating structures", Structural Safety, 2(1), pp.3~16 (1984)
- Das, P. K., "Buckling and ultimate strength criteria of stiffened shells under combined loading for reliability analysis", Thin-Walled Structures, 41(1), pp.69~88 (2003)
- DNV, "Buckling strength analysis", Classification notes no.30.1, 1~ (1992)
- Faulkner, D., "Application of reliability theory in submarine design, In Advances in Marine Structures-2", pp.566~230 (1991), Elsevier Applied Science Publishers
- Faulkner, D., "Application of reliability theory to structural design and assessment of submarines and other externally pressurised cylindrical structures, In Integrity of Offshore Structures- 4", pp.199~230 (1991), Elsevier Applied Science Publishers
- Faulkner, D., "Modelling requirements for structural design and assessment, In Integrity of Offshore Structures-3", pp.566~585 (1987), Elsevier Applied Science Publishers
- Faulkner, D., "Development of a reliability based design code for the structure of tension leg platforms", Proceedings of the Offshore Technology Conference. Paper OTC-4648, Houston, USA (1983)
- Germanischer Lloyd, "Rules for the classification and construction of Ship Technology, Part 5 Underwater Technology, Annex A - Calculation of the Pressure Hull, Hamburg, Germany", ~ (2009)
- Hasofer, A., "An exact and invariant first-order reliability format", Journal of Engineering Mechanics, 100(1), pp.11~121 (1974)
- Analysis of results of static pressure tests of Chatham submarine models, "Kendrick, S. B.", Naval Construction Research Establishment, ~, pp.Report R218 (1955)
- Structural development of a titanium oceanographic vehicle for operating depths of 15,000 to 20,000 feet, "Krenzke, M.A.", David Taylor Model Basin, ~, pp.Report 1677 (1963)
- MacKay, J.R., "Quantifying the accuracy of numerical collapse predictions for the design of submarine pressure hulls", Thin-Walled Structures, 49(1), pp.145~156 (2011)
- Miller, C.D., "External pressure tests of ring-stiffened fabricated cylinders", Offshore Technology Conference (1981)
- Morandi, A. C., "An outline of the application of reliability based techniques to structural design and assessment of submarines and other externally pressurised cylindrical structures", Marine Structures, 7(2-5), pp.173~187 (1994)
- Morandi, A. C., "Finite element analysis and reliability based design of externally pressurised ring-stiffened cylinders", Transactions of the Royal Institution of Naval Architects, 138, pp.138~171 (1996)
- The application of structural reliability methods to submarine pressure vessels, "Pegg, N. G.", Defence Research and Development Canada, ~, pp.DRDC Atlantic TM 95-203 (1996)
- Structural analysis and design considerations for cylindrical pressure hulls, "Pulos, J. G.", David Taylor Model Basin, ~, pp.Report 1639 (1963)
- An algorithm for the calculation of structural reliability under combined loading, "Rackwitz, R.", Berichte zur Sicherheitstheorie der Bauwerke, Lab. f. Konstr. Ingb., ~ (1977)
- Radha, P., "Reliability analysis of submarine pressure hulls with failure governed in inelastic buckling", Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering. Hamburg, Germany (2006)
- Sun, H.H., "Background of ABS buckling strength assessment criteria for cylindrical shells in offshore structures", Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering. Hamburg, Germany (2006)
- von Mises, R., "Stodola’s Festschrift, Zürich", 418~430 (1929)
- Wilson, L. B., "The elastic deformation of a circular cylindrical shell supported by equally spaced ring frames under uniform external pressure", Transactions of the Royal Institution of Naval Architects, 108, pp.63~72 (1966)