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- 저자 : 김슬기(Suel-Gi Kim) (검색결과 2 건)
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이종원(Jong-Won Lee),김슬기(Suel-Gi Kim),박주신(Joo-Shin Park),전민성(Min-sung Chun),서용석(Yong-Suk Suh),이제명(Jae-Myung Lee) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
Currently, lots of equations that Buckling/Ultimate strength concepts for flat plate were developed by classifications. However, developing design equation of curved plate was insufficient compare to much research and analysis for Lightweight and safety of ship structure. In this research, FEM analysis was carried out to fix dimension and load cases which have been often used range in ship structure. each buckling strength of classification rule were compared with FEM result. And each background of classification rule buckling strength is analyzed.
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선박 곡판의 하중과 수압에 따른 좌굴/최종강도설계식 개발
이종원(Jong-Won Lee),김슬기(Suel-Gi Kim),박주신(Joo-Shin Park),전민성(Min-sung Chun),서용석(Yong-Suk Suh),이제명(Jae-Myung Lee) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
A ship structure is basically an assembly of stiffened panel elements and an estimation of the maximum load-carrying capacity or the ultimate strength of these members is a very important task for the safety assessment and rational design of the structure. In general, cylindrically curved un-stiffened and stiffened plates are often used in ship/offshore structures, for example at wind tower, spa structure, side shell plating at fore and aft parts and bilge circle part in the merchant vessels .It has been known that role of curvature increases the buckling strength of a plate under compressive loading, and ultimate load-carrying capacity is also expected to increase. In the present paper, to clarify and examine the fundamental buckling and collapse behaviours of between unstiffened and stiffened curved plates subjected to combined axial compression and lateral pressure, a series of elastic and elasto-plastic large deflection analyses are performed using commercial FE-Analysis program (MSC/PATRAN, NASTRAN). On the basis of the numerical results, effect of curvature, magnitude of initial imperfection, slenderness ratio and aspect ratio on the characteristics of the buckling and collapse behaviour of unstiffened and stiffened curved plates are discussed. On the basis of the calculated results, the simple formulations are developed to predict the buckling/ultimate strength of unstiffened and stiffened curved plates subjected to combined loads in an analytical manner. The buckling and post-buckling strength behaviours are simulated by performing elastic large deflection analysis. Applying the new developed formulations, verification analysis is performed for curved plates comparing numerical results and then the usefulness of the proposed method is demonstrated.
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