Progressive Collapse Analysis of the Local Elements and Ultimate Strength of a Ro-Ro Ship

International Journal of Technology

卷:10

Muhammad Zubair MuisAlie¹  Samuel IzaakLatumahina¹ 

[1] Department of Ocean Engineering, Engineering Faculty, Hasanuddin University, Gowa 92171, Indonesia;

关键词: cross section;    hull girder;    intact condition;    local elements;    ro-ro ship;    ultimate strength;   

DOI  :  10.14716/ijtech.v10i5.1768

来源: DOAJ

【 摘 要 】

One of the most importantcriteria in ship design is strength. When a ship is under external loads suchas waves, buoyancy or pressure, its internal reaction must resists thoseexternal loads. In this regard, external loads are retained by the hull girder,whose cross section is composed of plates and stiffeners, which have asignificant influence on ultimate strength, especially in the longitudinaldirection. Therefore, this strength must be assessed and evaluated for the shipstructure and functional requirements. In this study, local elements of theship cross section, such as plates and stiffeners, are analyzed, includingtheir progressive collapse behavior. The example used for the calculation is aRoll-on/Roll-off (Ro-Ro) ship. The analysis is performed by assuming that thecross section remains plane and a one-frame space is considered. To calculatethe ultimate strength of the Ro-Ro ship under hogging and sagging conditions,Smith’s method is used and applied to an in-house program. The applied momentis given on the Multi Point Constraint (MPC) as the reference point of theneutral axis position. In this MPC position, a simple support is attached. Thecalculation of ultimate strength is made under hogging and sagging conditions,and the intact condition is focused on for the simple calculation. Weldingresidual stress, cracks, corrosion and initial deflection are not taken intoaccount. Application of the FE method is also made to investigate thecharacteristics of the collapse mode for local elements and global structure,including ultimate strength.

【 授权许可】

Unknown