| 3D viscous-spring artificial boundary in time domain |
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| 作者姓名： | 刘晶波 杜义欣 杜修力 王振宇 伍俊 |
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| 作者单位： | [1]Department of Civil Engineering, Tsinghua University, Beijing 100084, China [2]Beijing Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100022, China |
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| 基金项目： | 国家高技术研究发展计划(863计划);国家重点基础研究发展计划(973计划);国防部资助项目 |
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| 摘 要： | After a brief review of studies on artificial boundaries in dynamic soil-structure interaction, a three-dimensional viscous-spring artificial boundary （VSAB） in the time domain is developed in this paper. First, the 3D VSAB equations in the normal and tangential directions are derived based on the elastic wave motion theory. Secondly, a numerical simulation technique of wave motion equations along with the VSAB condition in the time domain is studied. Finally, numerical examples of some classical elastic wave motion problems are presented and the results are compared with the associated theoretical solutions, demonstrating that high precision and adequate stability can be achieved by using the proposed 3D VSAB. The proposed 3D VSAB can be conveniently incorporated in the general finite element program, which is commonly used to study dynamic soil-structure interaction problems.
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| 关 键 词： | 时域 数值模拟 土壤结构 波动 地震 |
| 文章编号： | 1671-3664（2006）01-0093-10 |
| 收稿时间： | 2005-12-03 |
| 修稿时间： | 2006-02-26 |
3D viscous-spring artificial boundary in time domain |
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| Jingbo Liu,Yixin Du,Xiuli Du,Zhenyu Wang Ph.D.,Jun Wu Ph.D..3D viscous-spring artificial boundary in time domain[J].Earthquake Engineering and Engineering Vibration,2006,5(1):93-102. |
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| Authors: | Jingbo Liu Yixin Du Xiuli Du Zhenyu Wang PhD Jun Wu PhD |
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| Institution: | 1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China
2. Beijing Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | After a brief review of studies on artificial boundaries in dynamic soil-structure interaction, a three-dimensional viscous-spring artificial boundary (VSAB) in the time domain is developed in this paper. First, the 3D VSAB equations in the normal and tangential directions are derived based on the elastic wave motion theory. Secondly, a numerical simulation technique of wave motion equations along with the VSAB condition in the time domain is studied. Finally, numerical examples of some classical elastic wave motion problems are presented and the results are compared with the associated theoretical solutions, demonstrating that high precision and adequate stability can be achieved by using the proposed 3D VSAB. The proposed 3D VSAB can be conveniently incorporated in the general finite element program, which is commonly used to study dynamic soil-structure interaction problems. |
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| Keywords: | artificial boundary viscous-spring wave motion time domain numerical simulation soil-structure interaction |
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