해양환경안전학회:학술대회논문집 (Proceedings of KOSOMES biannual meeting)
- 해양환경안전학회 2004년도 춘계학술발표회
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- Pages.121-125
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- 2004
선체 유공보강판의 압축최종강도에 관한 설계식 개발
Development of Compressive Ultimate Strength Formulations for Ship Plating Stiffener with Cutout
-
Ko Jae-Yong
(Faculty of Ocean System Engineering, Mokpo National Maritime University)
;
- Park Joo-Shin (Gradute school of Mokpo National Maritime University) ;
- Oh Dong-Kee (Graduate school of Mokpo National Maritime University)
- 발행 : 2004.05.01
초록
본 연구에서는 비선형 유한요소법을 적용하여 면내압축방향의 하중이 작용하는 경우, 유공판에 대하여 유공의 크기를 변화시켜가며, 최종강도 시리즌 해석을 수행하고 설계식을 도출하였다. 연속판 조건을 고려하여 모델링 범위를 결정하였으며, 주변 경계조건의 영향을 충분히 고려하기 위하여 주변 보강재를 포함하여 실제의 선박구조를 선정하였다. 또한, 보강재의 크기 및 형상의 영향을 조사하기 위하여 보강재 치수 및 종류를 변수로 한 시리즈 해석을 수행하고, 개발된 설계식의 적용성을 검토하였다.
Recently, High Tensile Steel is adapt to thin plate on the steel structure and marine structure is used widely, It is possible for buckling happens great. Specially, Initial deflection of ship structure happens in place absence necessarily by heat processing of welding or cutting etc. This Initial Deflection is exerted negative impact when thin plate absence complicated nonlinear behaviour accompanied secondary budding. As a result, must idealize initial deflection that occurrence is possible to endow stability and accuracy in the hull structure or marine structure and reflect in early structure design considering secondary buckling. Longi direction of compressive load interacts and analyzed finite element series analysis that apply various kinds initial deflection shape measured actually on occasion that is arranged simply supported condition in this research. Applied ANSYS (elasto-plasticity large deformation finite element method) to be mediocrity finite element program for analysis method and analysis control used in Newton-Raphson method & Arc-length method.
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