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船舶搁浅于台型礁石场景下双层底纵桁上纵骨变形机理研究 被引量：5

Collapse mechanism of longitudinal web girder attached stiffeners in a shoal grounding scenario of a double bottom tanker
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摘要 以典型船舶双层底结构中纵桁上的纵骨为研究对象,运用塑性力学理论和数值仿真手段,讨论了纵桁上骨材在船舶搁浅于台型礁石场景下的变形过程和破坏机理。研究中应用LS_DYNA仿真模拟得到结构变形模态和能量耗散结果,在研究变形模态基础上建立底纵桁骨材塑性变形发展过程的数学模型。运用塑性力学理论求解纵桁上骨材变形吸收的结构变形能和平均变形阻力;同时,应用数值仿真结果进行验证。研究得到的纵桁骨材变形阻力和变形能解析计算公式,对船舶双层底耐撞性结构设计和耐撞性能评估都具有一定的指导意义。 Plastic theory and numerical simulation were used to discuss deformation patterns and collapse mechanism of longitudinal web girder attached stiffeners in a shoal grounding scenario of a double bottom tanker. Numerical simulation code LS_DYNA was used to calculate the deformation patterns and energy dissipation,and a mathematical model of a progressively deforming stiffener was built.With the plastic theory,the deformation energy and the mean grounding resistances were solved,and these results were verified with the numerical simulation method.The analytical calculation formulas obtained could be used to calculate and assess the crashworthiness of a ship during its design phase.
作者 于兆龙 胡志强 王革 姜哲
机构地区 上海交通大学海洋工程国家重点实验室 大连理工大学工业装备结构分析国家重点实验室 美国船级社 中国海洋石油总公司研究总院
出处 《振动与冲击》 EI CSCD 北大核心 2014年第3期162-169,共8页 Journal of Vibration and Shock
基金 上海交通大学海洋工程国家重点实验室青年创新基金课题(GKZD010056-12) ABS COTC&SJTU合作项目
关键词 船舶搁浅 底纵桁骨材 解析计算 数值仿真 结构变形能 shoal grounding longitudinal web girder attached stiffeners analytical calculation numerical simulation deformation energy
分类号 U661.7 [交通运输工程—船舶及航道工程]
  • 相关文献

参考文献13

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二级参考文献16

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共引文献10

同被引文献56

  • 1Wierzbicki T, Culbertson D J. Crushing damage of web girders under localized static loads [ J ]. Journal of Constructional Steel Research, 1995, 33 (3) : 199 - 235.
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  • 5Simonsen B C, Ocakli H. Experiments and theory on deck and girder crushing [ J ]. Thin-Walled Structures, 1999, 34(3) :195 -216.
  • 6Hong L, Amdahl J. Crushing resistance of web girders in ship collision and grounding [ J ]. Marine Structures, 2008,21 ( 4 ) : 374 - 401.
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  • 10Wang G, Ohtsubo H, Liu D. A simple method for predicting the grounding strength of ships [ J ]. Journal of Ship Re- search, 1997, 41(3) : 241 -247.

引证文献5

二级引证文献20

振动与冲击
2014年 第3期

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