| 유공보강판의 좌굴 및 극한강도 특성에 관한 연구 |
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박주신, 고재용, 오경근 |
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| Characteristic of Buckling and Ultimate Strength of the Perforated Stiffened Plate |
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Joo-Shin Park, Jae-Yong Ko, Kyoung-Gun Oh |
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| Abstract |
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In ship structures many of the structural plates have cutouts, for example, at inner bottom structure, girder, upper deck hatch, floor and dia-frame etc. In the case where a plate has a cutout it experiences reduced buckling and ultimate strength and at the same time the in-plane stress under compressive load produced by hull girder bending will be redistributed In general, actual ship structure adopted reinforcement of stiffener around the cutout in order to preventing from buckling so it need to examine a buckling and ultimate strength behaviour considering a cutout because In many ship yards used class rule for calculating buckling strength but it is difficult to evaluate perforate stiffened plate with random size. In the present paper, we investigated several kinds of perforated stiffened model from actual ship and then was performed finite element series analysis varying the cutout ratio, web height, thickness and type of cross-section using commercial FEA program(ANSYS) under compressive load. |
| Key Words:
Finite element method;Perforated stiffened plate;Ultimate strength;Cross section;Buckling |
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