Sloshing in a Cylindrical Liquid Storage Tank With a Single-Deck Type Floating Roof Under Seismic Excitation
Sloshing in a Cylindrical Liquid Storage Tank With a Single-Deck Type Floating Roof Under Seismic Excitation
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DOI：
10.1115/pvp2007-26249
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发表时间：
2009-04
期刊：
影响因子：
--
通讯作者：
T. Matsui
中科院分区：
文献类型：
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作者：
T. Matsui
本文推导了地震激励下单层浮顶圆柱形储液罐晃动响应的显式解析解。浮顶由内甲板和外浮筒组成，内甲板可理想化为厚度均匀的各向同性弹性板，外浮筒可视为弹性曲梁。假设所含液体是无粘、不可压缩和无旋的。通过将浮顶的响应展开为空气中的自由振动模态，并应用柱坐标系下的Fourier-Bessel展开技术，得到了在线性势理论框架内精确的显式解。通过数值计算，研究了浮顶类型（单层或双层）和刚度对晃荡响应的影响。Copyright © 2007 by ASME
An explicit analytical solution is derived to predict the sloshing response of a cylindrical liquid storage tank with a single-deck type floating roof under seismic excitation. The floating roof is composed of an inner deck which may be idealized as an isotropic elastic plate with uniform thickness and connected to an outer pontoon which can be considered as an elastic curved beam. The contained liquid is assumed to be inviscid, incompressible and irrotational. By expanding the response of the floating roof into free vibration modes in air and applying the Fourier-Bessel expansion technique in cylindrical coordinates, the solution is obtained in an explicit form which is exact within the framework of linear potential theory. Numerical results are presented to investigate the effect of the type (single-deck or double-deck) and stiffness of the floating roof on the sloshing response.Copyright © 2007 by ASME