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http://dx.doi.org/10.3744/SNAK.2015.52.2.161

Redundancy Analysis of Stiffened Panel with Plastic Deformation due to Collision  

Yeom, Cheol Wung (Korean Register)
Nho, In Sik (Dept. of Naval Architecture & Ocean Engineering, Chungnam National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.52, no.2, 2015 , pp. 161-169 More about this Journal
Abstract
According to SOLAS Regulation XII/6.5.3 and IMO GBS functional requirement(IMO, 2010), the structural redundancy of multi-bay stiffened panel in cargo area of bulk carrier should be provided enough in order to endure the initial design load though one bay of the stiffened panel is damaged due to plastic deformation or fatigue crack. To satisfy structural redundancy, Harmonized Common Structural Rules (hereinafter CSR-H, IACS, 2014) proposed to use 1.15 instead of 1.0 for buckling usage factor of stiffened panel in cargo area. This paper shows that buckling usage factor in CSR-H for structural redundancy is somewhat conservative considering the ultimate strength calculated by using nonlinear FEA for the damaged condition which is only one bay's plastic deformation due to colliding by weigh object like a bucket. Also, this paper presents that increasing of plate thickness only is more effective to get enough structural redundancy.
Keywords
Colliding; CSR; Damaged stiffened panel; Nonlinear FEA; Structural redundancy; Ultimate strength;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Belytcheko, T. Lin, J.I. & Tsay, C.S., 1984. Explicit Algorithms for the Nonlinear Dynamics of Shells. Computer Methods in Applied Mechanics and Engineering, 42, pp.225-251.   DOI   ScienceOn
2 IACS, Harmonization Project Team 2(HPT02), 2009. Non-linear Finite Element Collapse Analyses of Stiffened Panels Procedure Description(IACS HPT02 Internal use only). IACS: London.
3 IACS, 2013. Recommendation No. 47, Shipbuilding and Repair Quality Standard - Rev. 7. IACS: London.
4 IACS, 2014a. Common Structural Rules for Bulk Carriers and Oil Tankers Rev. 1. IACS: London.
5 IACS, 2014b. Harmonized CSR Technical Background Report, Pt 1, Chap. 8, Sec. 5, Structural Redundancy. IACS: London.
6 IMO, 2006. SOLAS(International Convention for the Safety of Life at Sea), Chapter XII, Regulation 6.5.3. IMO: London.
7 IMO, 2010. Maritime Safety Committee Resolution 296/87. IMO: London.
8 Lee, T.K. & Lim, C.H., 2007. Ultimate Strength Analysis of Stiffened Plate with Minor Collision Damage. Journal of Ocean Engineering and Technology (JOET), 21(4), pp.34-37.