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http://dx.doi.org/10.3744/SNAK.2009.46.1.031

A Procedure for a Strength Assessment of Permanent Means of Access Structure  

Jang, Beom-Seon (Samsung Heavy Industries Co., Ltd., Offshore Basic Engineering Team, Seoul Offshore Design Center)
Chung, Sung-Wook (Samsung Heavy Industries Co., Ltd., Marine Research Institute, Structure Research)
Ko, Dae-En (Dong-Eui University, Department of Naval Architecture and Ocean Engineering)
Chun, Min-Sung (Samsung Heavy Industries Co., Ltd., Marine Research Institute, Structure Research)
Kim, Ji-Young (Samsung Heavy Industries Co., Ltd., Marine Research Institute, Structure Research)
Publication Information
Journal of the Society of Naval Architects of Korea / v.46, no.1, 2009 , pp. 31-42 More about this Journal
Abstract
Common structural rule (CSR) doesn' t provide any other specific regulations for permanent means of access (PMA) platform structure in a cargo oil tank. The PMA platform is recommended to comply with scantling requirement of local support member. However, it leads to too conservative scantlings compared with actual loads imposed on the platform. This paper proposes a strength assessment procedure for the PMA structure based on a nonlinear ultimate strength. The ultimate strength is evaluated in a sufficiently conservative way. The first linear buckling mode is used as an initial imperfection shape and its magnitude is determined using the definitions of DNV PULS. Since the same imperfection mode as the failure mode of the ultimate limit state is assumed, it can accelerate the failure. Au ultimate strength capacity curve obtained from a series of nonlinear FE analysis is compared with actual stresses calculated by CSR cargo hold analysis.
Keywords
Permanent means of access; Common structural rule; Nonlinear FE analysis; Ultimate strength analysis;
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  • Reference
1 IACS, 2006, Common structural rules for double hull oil tankers, International Association of Classification Societies, London
2 Paik, J.K., and Kim, C.R., 1988, “ Simple Formulae for Buckling and Ultimate Strength Estimation of Plates Subjected to Water Pressure and Uniaxial Compression,” Journal of the Society of Naval Architects, Vol. 25, No. 4, pp. 69-80   과학기술학회마을
3 DNV PULS, 2006, User' s manual(version 2.05), Technical Report No. 2004-0406, Det Norske Veritas, Oslo
4 MSC.NASTRAN, 2005, User' s Manual (version 2005r3b), MSC.Software Corporation, Santa Ana, CA, USA
5 MSC.PATRAN, 2005, User' s Manual(version 2005r2), MSC.Software Corporation, Santa Ana, CA, USA
6 Paik, J.K. and Lee J.M., 1996, “ An Empirical formulation for Predicting the Ultimate Compressive Strength of Plates and Stiffened Plates,” Journal of the Society of Naval Architects, Vol. 33, No. 3, pp. 8-21   과학기술학회마을
7 Paik, J.K., Lee, J.M., Park, Y.I., Seo, J.K, and Chun, Y.O., 2004, “ A Benchmark study on ultimate strength predictions of ship stiffened panels-Using FEA, DNV PULS and ALPS/ULSAP,” Proceedings of the Annual Autumn Meeting The Society of Naval Architects of Korea, pp. 358-365   과학기술학회마을
8 Paik, J.K., Seo, J.K., Kim, B.J. Suh, Y.S. and Jang, B.S., 2007, “ Methods for Ultimate Limit State Assessment of Marine Structures: A Benchmark Study,” Proc. International Conference on Advancements in Marine Structures, Glasgow, UK, pp. 12-14
9 Paik, J.K., and Thayamballi, A.K., 2003, Ultimate limit state design of steel-plated structures, John Wiley & Sons, Chichester, UK
10 ANSYS, 2006, User's manual(version 10.0), Swanson Analysis Systems Inc., Houston
11 Paik, J.K., and Thayamballi, A.K., 2007, Shipshaped offshore installations: Design, building, and operation, Cambridge University Press, Cambridge, UK
12 ALPS/ULSAP, 2006, A computer program for ultimate limit state assessment for stiffened panels(version 2006.3), Proteus Engineering, Stevensville, MD, USA