| 大型储罐的模态分析 |
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| 引用本文： | 柯林华,丁小军.大型储罐的模态分析[J].嘉兴学院学报,2011,23(3):103-105. |
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| 作者姓名： | 柯林华 丁小军 |
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| 作者单位： | 1. 嘉兴学院建筑工程学院,浙江嘉兴,314001
2. 兰州交通大学土木工程学院,甘肃兰州,730070 |
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| 摘 要： | 模态分析是其他动力响应分析的基础,为了给大型储罐地震动力响应的进一步分析提供数据,利用ANSYS软件建立了大型储罐有限元简化模型,采用附加质量法,对大型储罐的自振特性进行了分析.分别提取了锚固罐和非锚固罐前30阶模态,并给出了部分模态三维振型图.结果表明,大型储罐空罐模态振型主要成环向多波效应,主要变形发生在罐体中上部,因此,对于罐体的中上部进行抗震加固是必要的.
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| 关 键 词： | 大型储罐 有限元模型 模态分析 |
Modal Analysis of Large Storage Tanks |
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| KE Lin-hua,DING Xiao-jun.Modal Analysis of Large Storage Tanks[J].Journal of Jiaxing College,2011,23(3):103-105. |
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| Authors: | KE Lin-hua DING Xiao-jun |
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| Institution: | KE Lin-hua1,DING Xiao-jun2(1.School of Architecture and Civil Engineering,Jiaxing University,Jiaxing,Zhejiang 314001,2.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou,Gansu 730070) |
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| Abstract: | Modal analysis is the basis of some other dynamic response.For further analysis of dynamic response of the tanks in earthquake,simplified mass-added models were built with ANSYS program,and the first 30 modals of anchored and unanchored tanks were extracted as well as some three-dimension mode figures.The results indicate that,most models of the empty large storage tanks show multiple circumferential waves,and the upper parts of the tanks show relative large deformation,so it is essential to take some seism... |
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| Keywords: | large storage tanks finite element model modal analysis |
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