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标题：MECHANICAL BEHAVIOR INVESTIGATION FOR AN ATMOSPHERIC STORAGE TANK ACCORDING TO API 650 UNDER LOADS USING FEM
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作者：Alireza Naddaf Oskouei ; Ehsan Nazari Naghani
期刊名称：Journal of Current Research in Science
印刷版ISSN：2322-5009
出版年度：2014
卷号：2
期号：5
页码：664-672
出版社：Islamic press
摘要：This paper analyzes the mechanical behavior of an atmospheric storage tank under loads (dead load, weight of fluid, wind and earthquake) that has been designed according to standard analytical equations of API 650. After defining analytical equations results, we study the tank behavior by numerical analysis of finite element software ABAQUS. Finally, comparing these two results, after defining critical displacement and buckling points we recommend some solution to increase the buckling strength of tank cylindrical shell that will conclude to increase its shelf life. The results show that values of hoop membrane stress in tank shell obtained by numerical method is proportional to those obtained by design analytical equations of standard and they fluctuate in a parallel way. Moreover the values of hoop membrane stress obtained by numerical method are 9% less than analytical method. The studies on stability of the tank, represents that installing boxlike stiffening rings in tank shell causes an improvement of 72% in buckling strength of tank shell
关键词：Atmospheric storage tank; Cylindrical shells; Finite Element; Buckling strength; API 650