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船舶与取水头结构防撞装置碰撞的数值仿真
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作者 冯倩 《施工技术》 CAS 北大核心 2017年第S2期1505-1508,共4页
为研究船舶撞击下模袋装砂缓冲区对取水头结构的保护效果,采用有限元软件LS-DYNA对某内陆核电厂带模袋装砂缓冲区的取水头结构进行5000吨级江海轮碰撞模拟。通过对单元和材料本构关系的合理选取、接触和摩擦的处理,实现了船舶与取水结... 为研究船舶撞击下模袋装砂缓冲区对取水头结构的保护效果,采用有限元软件LS-DYNA对某内陆核电厂带模袋装砂缓冲区的取水头结构进行5000吨级江海轮碰撞模拟。通过对单元和材料本构关系的合理选取、接触和摩擦的处理,实现了船舶与取水结构的碰撞模拟。根据计算结果,从碰撞力、取水头结构最大压应力等方面,分析了船体与取水头结构在碰撞过程中的力学规律。研究结果表明:船体的动能与模袋缓冲区的弹性势能转换关系良好,且取水头结构无塑性破坏区。 展开更多
关键词 船舶碰撞模拟 取水头结构 有限元技术 最大压应力
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Simulation and Reasonable Design of Bridge Steel Fenders to Reduce Ship Impacts
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作者 OU Bifeng WANG Junjie 《Transactions of Tianjin University》 EI CAS 2006年第B09期214-218,共5页
Steel fenders are increasingly used for ship-impact resistance structures in the design of navigable bridges. As an important approach to investigating this anti-impact structure effectiveness to reduce influences of ... Steel fenders are increasingly used for ship-impact resistance structures in the design of navigable bridges. As an important approach to investigating this anti-impact structure effectiveness to reduce influences of vessel impact, simulation analyses are still not perfect yet. So this paper is intended to discuss several issues related to ship collision simulations, including steel constitutive relationship, connections between steel box and pile cap, contacts definition and friction consideration, and the determination of impact waterlines and angles. Consequently based on two examples of ship-steel fender-bridge structure systems, some conclusions about effectiveness and design of fenders to reduce ship impact are drawn. 展开更多
关键词 BRIDGE ship collision steel fender simulation design
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