立式储液罐象足屈曲的准静态数值模拟

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：Quasi-static Numerical Simulation of Elephant-foot Buckling of Cylindrical Liquid Storage Tanks 中文刊名：压力容器 英文刊名：Pressure Vessel Technology 作者：葛颂 ; 陈志平 ; 沈建民 ; 蒋家羚 英文作者：GE Song ; CHEN Zhi-pin ; SHEN Jian-min ; JIANG Jia-ling(Institute of Chemical Machinery ; Zhejiang University ; Hangzhou 310027 ; China) 中文关键词：象足屈曲 ; 储液罐 ; 非线性有限元 英文关键词：elephant-foot buckling ; liquid storage tanks ; nonlinear finite-element method 出版日期：2006-01-30 机构：浙江大学化工机械研究所,浙江大学化工机械研究所,浙江大学化工机械研究所,浙江大学化工机械研究所 浙江杭州310027,浙江杭州310027,浙江杭州310027,浙江杭州310027 年：2006 期：01 出版单位：压力容器

摘要

“象足”屈曲现象是大型钢制立式储液罐地震破坏的主要形式之一,它发生在靠近底部的壁板区域。在考虑大变形几何非线性和材料非线性条件下,本文利用非线性有限元法,以轴对称载荷壳单元模型,对一定尺寸范围内的储罐进行了准静态弹塑性屈曲分析。研究了受轴向压应力情况下,环向应力和轴向压缩失稳能力之间的关系。并强调了轴向压力是导致失稳的主导作用。
The elephant-food buckling(EFB) is one of the main destruction phenomenon of large cylindrical liquid storage tanks during earthquake,which occurs on the shell near the tank base zone.This article uses nonlinear finite-element method,including both geometric and material nonlinearity,when modeling a axisymmetric loaded tank shell model in a typical range of dimension by a quasi-static elastic-plastic buckling approach.The relation of hoop stress and axial stress of the shell is analyzed under axial compressive stress.In addition,it concerns the predominant effect of axial stress leading to collapse.

引文

[1]M.A.Haroun and H.Bhatia.Numerical Simulation of Ele-phant-foot Buckling of Seismically-excited Steel Cylindri-cal Tanks[C].Proceedings of the 1997 ASME Pressure Ves-sels and Piping Conference,Jul 27-31 1997.355,333-340.1997.Orlando,FL,USA,ASME,New York,NY,USA.American Society of Mechanical Engineers,PressureVessels and Piping Division(Publication)PVP.
    [2]GB50341-2003,立式圆筒型钢制焊接油罐设计规范[S].2003.
    [3]Al El-Zeiny.Nonlinear Time-Dependent Seismic Re-sponse of Unanchored Liquid Storage Tanks[D].9-6-2000.University of California,Irvine.
    [4]王莉莉,等.Ⅲ类季节性冻土场地对圆柱形储液罐地震反应的影响[J].压力容器,2005,22(6).