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首页> 外文期刊>Makara Seri Teknologi >Residual Strength Analysisof Asymmetrically Damaged Ship Hull GirderUsing Beam Finite Element Method
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Residual Strength Analysisof Asymmetrically Damaged Ship Hull GirderUsing Beam Finite Element Method

机译:用梁有限元法分析非对称损伤船体梁的残余强度

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The objective of the present study is to analyze the residual strength of asymmetrically damaged ship hull girder under?longitudinal bending. Beam Finite Element Method isused for the assessment of the residual strength of two single hull?bulk carriers (Ship B1 and Ship B4) and a three-cargo-hold model of a single-side Panamax Bulk Carrierin hogging?and sagging conditions. The Smith’s ?method ?is ?adopted ?and ?implemented ?into ?Beam ?Finite ?Element Method. An?efficient solution procedure is applied; i.e. by assuming the cross section remains plane, the vertical bending moment is?applied to the ?cross section ?and ?three-cargo-hold ?model. As a fundamental ?case, ?the ?damage is simply ?created ?by?removing the elements from the cross section, neglecting any welding residual stress and initial imperfection. Also no?crack ?extension ?is considered. ?The ?result ?obtained ?by ?Beam ?Finite ?Element ?Method ?so-called Beam-HULLST is?compared to the progressive collapse analysis obtained by HULLST for the validation of the present work. Then, for the?three-hold-model, the Beam-HULLST is used to investigate the effect of the rotation of the netral axisboth intact and?damage condition taking the one and five frame spaces into account.
机译:本研究的目的是分析在纵向弯曲下不对称损坏的船体梁的残余强度。梁有限元法用于评估两个单一的船体散装货船(B1和B4船)的残余强度,以及单侧巴拿马型散货船在起伏和下垂条件下的三货舱模型。 Smith的“方法”被采用并被实施为“ Beam”有限元法。采用有效的解决方案;即,通过假定横截面保持平面,将垂直弯矩施加到“横截面”和“三货舱”模型上。作为基本情况,通过从横截面上去除元件,而忽略焊接残余应力和初始缺陷,可以简单地造成损坏。还考虑了无裂纹扩展。通过“束”有限元“方法”(即所谓的Beam-HULLST)获得的结果与通过HULLST获得的渐进倒塌分析进行比较,以验证本工作。然后,对于“三点保持”模型,使用Beam-HULLST来考虑一和五个框架空间来研究完整轴和损坏条件对净轴旋转的影响。

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