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浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (09): 1679-1683    DOI: 10.3785/j.issn.1008-973X.2009.
能源与机械工程     
多层不等厚组合圆柱壳屈曲数值模拟分析
陈志平1,余雏麟1,白生虎2,曾明1,朱劲平1
（1.浙江大学 化工机械研究所,浙江 杭州 310027；2.中国石化集团 管道储运公司,江苏 徐州 221008）
Numerical simulation on buckling of combined multilayered unequal-thickness cylindrical shell
CHEN Zhi-ping1,YU Chu-lin1,BAI Sheng-hu2,ZENG Ming1,ZHU Jin-ping1
(1.Institute of Process Equipment , Zhejiang University, Hangzhou 310027,China;
2.Pipeline Storage and Transportation Corporation, SINOPEC, Xuzhou 221008,China) 
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摘要：

针对大型立式组合圆柱壳结构的几何特征,采用数值模拟方法分析了多层不等厚特征因素对圆柱壳屈曲临界载荷的影响.提出多层不等厚可看成是圆柱壳壳壁上的几何缺陷,在一定程度上会减弱经典圆柱壳的屈曲临界应力水平.建立数个多层不等厚组合圆柱壳的屈曲分析有限元（FEA）模型,初步分析了不同载荷工况下多层组合圆柱壳的屈曲行为,得到相应的屈曲失稳临界载荷,验证了环向应力对组合圆柱壳屈曲的影响规律.结果表明,多层不等厚特征因素可明显降低经典圆柱壳的屈曲临界载荷,其中层数和相邻圆柱壳壁厚差值对屈曲临界载荷的影响最大.
Abstract:

The influence of the characteristic factor of unequal-thickness on critical buckling load was analyzed by numerical simulation method based on geometric features of large vertical combined cylindrical shell. The character of unequal-thickness was considered as geometrical defect, which decreases the critical stress of classical shell buckling to some extent. Finite element analysis (FEA) models of combined multilayered unequal-thickness cylindrical shell were built to analyze the buckling of combined cylindrical shell under different loadings. Critical loads of instability buckling under different loadings were obtained to verify the influence regularity of hoop stress on the buckling of combined cylindrical shell. Results show that the characteristic factor of unequal-thickness can largely decrease the critical load of classical shell buckling. And the number of layers and the thickness difference of adjacent shell courses have the biggest influence on critical buckling load．
:  TE 972.1  
基金资助:

国家“863”高技术研究发展计划资助项目（2007AA04Z427）.
作者简介: 陈志平(1965-)，男，浙江安吉人，教授，博导，从事压力容器安全保障技术与创新研究.
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引用本文:

陈志平, 余雏麟, 白生虎, 等. 多层不等厚组合圆柱壳屈曲数值模拟分析[J]. J4, 2009, 43(09): 1679-1683.

CHEN Zhi-Beng, TU Chu-Lin, BAI Sheng-Hu, et al. Numerical simulation on buckling of combined multilayered unequal-thickness cylindrical shell. J4, 2009, 43(09): 1679-1683.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2009.    或    http://www.zjujournals.com/eng/CN/Y2009/V43/I09/1679

[1] CHEN Z P, DUAN Y Y, SHEN J M, et al. A simplified method for calculating the stress of large storage tank wall [J]. Proceedings IMechE Part E: Journal of Mechanical Engineering Science, 2007, 221(3):119-127.
[2] 陈志平,沈建民,葛颂,等. 基于组合圆柱壳理论的大型油罐应力分析[J]. 浙江大学学报:工学版,2006,40(9):1629-1633.
CHEN Zhi-ping, SHEN Jian-min, GE Song, et al. Stress analysis of large oil storage tanks based on combined cylindrical shell [J]. Journal of Zhejiang University: Engineering Science, 2006, 40(9): 1629-1633.
[3] KIM S E, KIM C S. Buckling strength of the cylindrical shell and tank subject to axially compressive loads [J]. Thin-Walled Structures, 2002, 40(4):329-353.
[4] 美国地震工程研究会. 洛马普里埃塔地震考察[M]. 中国石油化工总公司抗震办公室,译. 北京: 地震出版社, 1991.
[5] HORNUNG U, SAAL H. Buckling loads of tank shells with imperfection [J]. Nonlinear Mechanics, 2002, 37(4-5): 605-621.
[6] HBNER A, TENG J G, SAAL H. Buckling behaviour of large steel cylinders with patterned welds [J]. International Journal of Pressure Vessels and Piping, 2006, 83(1): 13-26.
[7] AGHAJARI S, ABEDI K, SHOWKATI H. Buckling and post-buckling behavior of thin-walled cylindrical steel shells with varying thickness subjected to uniform external pressure [J]. Thin-Walled Structures, 2006, 44(8): 904-909.
[8]NIWA A, CLOUGH R W. Buckling of cylindrical liquid storage tanks under earthquake loading [J]. Journal of Earthquake Engineering and Structure Dynamics, 1982, 10 (1): 107-122.
[9] 陈志平,葛颂,沈建民,等. 大型原油储罐有限元分析建模的新方法[J]. 浙江大学学报:工学版,2006,40(6): 977-981.
CHEN Zhi-ping, GE Song, SHEN Jian-min, et al. New modeling method for finite element analysis of large oil storage tanks [J]. Journal of Zhejiang University: Engineering Science, 2006, 40(6): 977-981.
[10] 郭乙木,陶伟明,庄茁. 线性与非线性有限元及其应用[M]. 北京:机械工业出版社, 2004.
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