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Structural Assessment of the Hull Response of an FPSO Unit to Dropped Objects: A Case Study

机译:FPSO装置船体响应的结构评估掉落对象:案例研究

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Offshore structures are exposed to the risk of damage caused by various types of extreme and accidental events, such as fire, explosion, collision, and dropped objects. These events cause structural damage in the impact area, including yielding of materials, local buckling, and in some cases local failure and penetration. The structural response of an FPSO hull subjected to events involving dropped objects is investigated in this study, and non-linear finite element analyses are carried out using an explicit dynamic code written LS-DYNA software. The scenarios involving dropped objects are based on the impact from the fall of a container and rigid mechanical equipment. Impact analyses of the dropped objects demonstrated that even though some structural members were permanently deformed by drop loads, no failure took place in accordance with the plastic strain criteria, as per NORSOK standards. The findings and insights derived from the present study may be informative in the safe design of floating offshore structures.
机译:海上结构暴露于由各种类型的极端和意外事件造成的损坏的风险,例如火灾,爆炸,碰撞和掉落物体。这些事件导致冲击区域的结构损坏,包括材料,当地屈曲,以及某些情况下的局部故障和渗透。在本研究中研究了涉及丢弃物体的事件的FPSO船体的结构响应,并且使用写入的LS-DYNA软件的显式动态代码进行非线性有限元分析。涉及掉落物体的场景基于集装箱和刚性机械设备的倒塌的影响。掉落对象的冲击分析表明,即使某些结构构件因下降负荷而永久变形,也不会根据塑料应变标准进行故障,根据Norsok标准。从本研究中得出的调查结果和见解可能是浮动近海结构的安全设计中的信息。

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