Rocking Response Analysis of Flat-Bottom Cylindrical Tanks Considering Rotational Inertia of Content Liquid
Rocking Response Analysis of Flat-Bottom Cylindrical Tanks Considering Rotational Inertia of Content Liquid
复制标题
考虑内容液转动惯量的平底圆筒罐摇摆响应分析
DOI：
10.1115/pvp2022-84909
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Nakashima Teruhiro
中科院分区：
文献类型：
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作者：
Yoshida Yuichi;Taniguchi Tomoyo;Nakashima Teruhiro
本文提出了一种非锚固储罐在地震动作用下摇摆反应的解析计算方法。一些研究者提出了不考虑贮液转动惯量的非锚固储罐地震反应分析方法。换句话说，大多数储罐摇摆响应时程分析方法都假定旋转方向的平衡方程可以表示为倾覆力矩和恢复力矩相等的静力平衡方程。即使在过去提出了考虑内容物液体转动惯量的模型，转动惯量的定义也是模糊的。另一方面，有一个研究，从物理背景推导出的惯性矩，并声称惯性矩的重要性，在储罐摇摆响应。在这项研究中，考虑到内容液体的转动惯量的储罐摇摆运动的时程分析的分析方法提出。最后，将该方法的计算结果与有限元动力分析结果进行了比较，验证了该方法的准确性。最后，与传统计算方法的结果进行了比较。
This paper proposes an analytical method for calculating rocking responses of unanchored tanks during seismic ground motion. Some researchers have proposed the analytical methods to calculate seismic responses of unanchored tanks without considering the rotational inertia of content liquid. In other words, most of method for a time-history analysis of tank rocking responses are assumed that an equilibrium equation in direction of rotation can be formulated as a static equilibrium equation in which the overturning moment and the restoring moment are equal. Even a model that considers rotational inertia of content liquid was proposed in the past, the definition of moment of inertia is ambiguous. On the other hand, there a study that derives moment of inertia from a physical background and alleges the importance of the moment of inertia in the tank rocking response.In this study, an analytical method of a time history analysis of tank rocking motion considering the rotational inertia of content liquid is proposed. Furthermore, results of the proposed method are compared with results of the FEM dynamic analysis to validate the accuracy of the proposed method. Finally, comparisons with results of the conventional calculation method are also conducted.