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Experimental and numerical analysis of container multiple stacks dynamics using a scaled model

机译：使用比例模型对集装箱多堆动力学进行实验和数值分析

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This research aim to understand the mechanical behavior of container stacks under predefined driving excitation emulating real maritime conditions. The objects of study are scaled models (Froude scaling) of a 20 ft ISO freight container and its linking connectors, i.e., twist locks arranged in three adjacent seven-tier stacks. In the first stage of the study: a series of experiments were performed, using a shaking table, to build a database to calibrate a numerical model. The second stage of the study used a numerical model (F.E.A.) to understand the effect of structural changes and basic vibrational variables on the structural response of the stacks. The numerical analysis incorporates contact using the Kelvin-Voigt model. From the results it is possible to identify how each variable affects the structural response. Additionally, it is possible to calculate explicitly the loads on critical points of the structure. The evidence from this study suggests that the use of discrete damping elements, decreasing gap size and joining stacks, may help to minimize the structural response of the container stacks. The modeling of such a problem may provoke profound modifications on the current methods used to calculate loads on the stacks and securing (lashing) systems.
机译：这项研究旨在了解在模拟实际海上条件的预定义驱动激励下集装箱堆的力学行为。研究的对象是20英尺ISO货运集装箱及其链接连接器的比例模型（弗洛德比例），即连接在三个相邻的七层堆栈中的扭锁。在研究的第一阶段：使用振动台进行了一系列实验，以建立用于校准数值模型的数据库。研究的第二阶段使用数值模型（F.E.A.）来了解结构变化和基本振动变量对烟囱结构响应的影响。数值分析使用Kelvin-Voigt模型合并了接触。从结果可以确定每个变量如何影响结构响应。另外，可以显式计算结构关键点上的载荷。这项研究的证据表明，使用离散的阻尼元件，减小间隙尺寸和连接烟囱可能有助于最小化集装箱烟囱的结构响应。此类问题的建模可能会引起对用于计算堆栈上的载荷和固定（绑扎）系统的当前方法的深刻修改。

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