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| 16万方LNG储罐的动特性分析 | |
| 引用本文： | 张营,孙建刚,崔利富,赵长军.16万方LNG储罐的动特性分析[J].大连民族学院学报,2010,12(5):464-466. |
| 作者姓名： | 张营 孙建刚 崔利富 赵长军 |
| 作者单位： | 1. 东北石油大学,土木建筑工程学院,黑龙江,大庆163318 2. 大连民族学院,土木建筑工程学院,辽宁,大连116605 3. 大连海事大学,道路与桥梁工程研究所,辽宁,大连116026 |
| 摘 要： | 以16×104m3LNG储罐为例,应用ADINA有限元软件中的Lanczos特征值算法,考虑液固耦合效应研究其动力特性参数。结果表明：内罐液固耦合基本振动频率较低,振动形式以cosnθ型梁式振动为主,液体晃动为低频的振动;外罐基本振动频率较高,振动形式也以cosnθ型梁式振动为主。内罐的液固耦合前三阶频率分别为1.979,4.766,6.491 Hz;液体晃动前三阶频率分别为0.104,0.185,0.235 Hz;外罐前三阶频率分别为6.509,12.37,22.16 Hz。 |
| 关 键 词： | LNG储罐 模态分析 液固耦合 梁式振动 |
Dynamical Characteristic Analysis of 160,000-m3 LNG Storage Tanks |
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| ZHANG Ying,SUN Jian-gang,CUI Li-fu,ZHAO Chang-jun.Dynamical Characteristic Analysis of 160,000-m3 LNG Storage Tanks[J].Journal of Dalian Nationalities University,2010,12(5):464-466. | |
| Authors: | ZHANG Ying SUN Jian-gang CUI Li-fu ZHAO Chang-jun |
| Institution: | 1.School of Civil and Architectural Engineering,Northeastern Petroleum University,Daqing Heilongjiang 163318,China; 2.College of Civil and Architecture Engineering,Dalian Nationalities University,Dalian Liaoning 116605,China; 3.Institute of Road and Bridge Engineering,Dalian Maritime University,Dalian Liaoning 116026,China) |
| Abstract: | The dynamic characteristic parameters of 160,000-m3 LNG storage tanks were studied by considering the liquid-solid coupling effect and using the Lanczos algorithm in ADINA Finite Element Analysis Software.The result shows that： the inner tank＇s basic vibration frequency of liquid-solid coupling is lower,cosnθ beam vibration is the leading form of vibration and liquid-sloshing is low-frequency vibration;the outer tank＇s basic vibration frequency is higher and cosnθ beam vibration is also the leading form of vibration.The first three-order frequencies of the inner tank＇s liquid-solid coupling are 1.979,4.766 and 6.491 Hz respectively;those of liquid sloshing are 0.104,0.185 and 0.235 Hz respectively;those of the outer tank are 6.509,12.37 and 22.16 Hz respectively. |
| Keywords: | LNG storage tank modal analysis liquid-solid coupling beam vibration |
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