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81600 DWT散货船是在82000 DWT散货船基础上开发的新一代卡姆萨船型。通过梁系计算、有限元等手段并结合造船实践经验,对原结构形式进行了分析计算,优化设计,使得结构更安全,更经济,更优化,重量更轻。确保在激烈的市场竞争中,保持领先地位。 相似文献
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32000DWT散货船货舱段结构强度分析 总被引:1,自引:0,他引:1
利用MSC/Patran、MSC/Nastran软件分析了32000DWT散货船货舱段强度。给出了外载荷的计算方法和边界条件的施加方法,计算了典型的3种工况下32000DWT散货船的强度。通过有限元强度分析得到的结论可用于散货船的结构设计和优化。计算结果表明,本船的结构强度满足规范要求。 相似文献
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针对一艘万t级大开口重吊船在整体吊装时的结构强度问题,采用挪威船级社的SASAM软件对整船有限元模型进行水动力和有限元分析,获得该船在吊装状态下的运动响应和结构强度,为吊装作业和结构设计提供参考和依据。 相似文献
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介绍深水起重铺管船的船型特点,研究这种特殊船型的结构形式设计;结合船体质量分布和波浪载荷预报结果,进行总纵强度分析;借助三维有限元分析方法,对船体艉部结构进行局部强度分析;最后,分析总结该类工程船的设计关键及技术难点。 相似文献
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船舶在航行时发生砰击是一种高度非线性的物理现象。本文基于势流理论Rankine源法,研究用时域非线性方法计算船舶运动响应,获得船波垂向相对运动速度;并选取合适的砰击压力系数,计算船舶砰击载荷。最后用该方法评估了一艘集装箱船艏部砰击强度,验证了该方法的合理性。 相似文献
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In this paper, we investigate the damage to offshore platforms subjected to ship collisions. The considered scenarios are bow and stern impacts against the column of a floating platform and against the jacket legs and braces. The effect of the ship–platform interaction on the distribution of damage is studied by modeling both structures using nonlinear shell finite elements. A supply vessel of 7500-ton displacement with bulbous bow is modeled. A comprehensive numerical analysis program is conducted, and the primary findings are described herein. The collision forces from the vessel are compared with the suggested force–deformation curves in the NORSOK code. For collisions with floating platforms we particularly focus on the crushing behavior and potential penetration of the bulbous bow and stern sections into the cargo tanks or void spaces of semi-submersible platforms. For fixed jacket platforms we investigate whether jacket braces can penetrate into the ship without being subjected to significant plastic bending or local denting.Adequate treatment of the relative strength between the interacting bodies is especially relevant for impacts with high levels of available kinetic energy, for which shared energy or strength design is aimed at. Simplifying one body as rigid quickly leads to overly conservative and/or costly solutions, and is in some cases non-conservative.The numerical analysis is used to develop a novel pressure–area relation for the deformation of the bulbous bow and stern corners of the supply vessel. Procedures for strength design of the stiffened panels are discussed. Refined methods and criteria are proposed for strength design of platforms, including both floating and jacket structures. The adequacy of the NORSOK design guidance for collisions against jacket legs is evaluated. The characteristic strength of a cylindrical column is used to develop a novel criterion for the resistance to local denting from stern corners and bulbous bows. 相似文献
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随着海上风电的快速发展,风电安装船作为建设海上风电场的关键设备得到了广泛应用,由于其工作于恶劣的海洋环境中,保证其安全尤为重要。本文针对一自升式风电安装船,探讨了其在风暴自存下的载荷种类和计算方法,应用ANSYS软件建立了整体结构的有限元模型,通过施加相应的边界条件和外载荷,对其总体性能包括全船结构强度、锁紧结构承载性能、预压载性能、抗倾稳性及桩靴承载性能进行了分析。分析结果表明,风电安装船在风暴自存工况下总体性能满足使用要求。论文研究成果可为同类船型的设计分析提供参考。 相似文献
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小水线面双体船的疲劳强度问题十分突出,疲劳强度校核节点众多且目前还没有一个明确的疲劳节点筛选原则。针对这些问题,研究基于典型节点的热点应力集中系数有限元计算和名义应力分析,对小水线面双体船全船结构中可能发生疲劳强度失效的节点进行疲劳寿命估算,并根据估算结果对需要进行热点应力分析的疲劳节点进行筛选。计算结果表明,该方法在处理大量结构节点的疲劳寿命估算问题中,计算效率较高,能够反映全船的节点疲劳强度特性,且估算结果较为可靠。该方法不仅适用于小水线面双体船,对于其他类型的船舶,该方法同样具有适用性。 相似文献