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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Supported by: National Natural Science Foundation of China Under Grant No. 50478014; Special Funds for Major State Basic Research Project Under Grant No.2002CB412706; Research Funds from National Civil Defense Office of China for the Tenth Five-year Plan
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Liu, J., Du, Y., Du, X. et al. 3D viscous-spring artificial boundary in time domain. Earthq. Engin. Engin. Vib. 5, 93–102 (2006). https://doi.org/10.1007/s11803-006-0585-2
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DOI: https://doi.org/10.1007/s11803-006-0585-2