대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제47권5호
  • /
  • Pages.709-718
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  • 2010
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  • 1225-1143(pISSN)
  • /
  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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실선 보강판의 세장비 분포 및 평균 압축 강도 비교 연구

Slenderness Ratio Distributions and Average Compressive Strengths of Stiffened Plates Used for In-Service Vessels

  • 남지명 (인하대학교 조선해양공학과) ;
  • 정준모 (인하대학교 조선해양공학과) ;
  • 전상익 (인하대학교 조선해양공학과) ;
  • 이민성 (인하대학교 조선해양공학과) ;
  • 하태범 (한국선급 기술연구소)
  • Nam, Ji-Myung (Dep't of Naval Architecture and Ocean Engineering, Inha University) ;
  • Choung, Joon-Mo (Dep't of Naval Architecture and Ocean Engineering, Inha University) ;
  • Jeon, Sang-Ik (Dep't of Naval Architecture and Ocean Engineering, Inha University) ;
  • Lee, Min-Seong (Dep't of Naval Architecture and Ocean Engineering, Inha University) ;
  • Ha, Tae-Bum (Research and Development Center, Korean Register of Shipping)
  • 투고 : 2010.07.16
  • 심사 : 2010.09.15
  • 발행 : 2010.10.20
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초록

This paper deals with two contents: first, distributions of plate slenderness ratios, stiffened plate slenderness ratios, and stiffener slenderness ratios, which include dimensions and material variables of stiffened plates, of stiffened plates of large-sized in-service vessels, and, second, comparison of compressive strengths. The investigated vessels consist of 59 tankers, 49 bulkers, 28 product carriers, 15 container carriers, and 12 multi-purpose vessels. The tankers are ranged from handymax class to VLCC and larger than Suezmax class. The sizes of the bulkers are 20K to 200K deadweight. The maximum size of containers is less than 5000TEU class. Two parameters for normal distributions of the slenderness ratios (mean and standard deviation) are suggested and probable ranges of the slenderness ratios are also graphically presented. The ultimate strengths of the stiffened plates are presented using the various simplified formulas and nonlinear FEAs. As well, average compressive strength curves, which are necessary for the estimation of the hull girder moment capacities, are proposed. It is proved that formulas for stiffened plates in CSR overestimate slightly in overall average strain range. Mode5 formula (plate buckling mode) in CSR show unreasonably conservative results with respect to the ultimate strengths rather than post-ultimate average compressive strengths.

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참고문헌

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