Frequency Domain Analysis of Multi-Degree of Freedom in Series Model SSI Effect with Translation and Rotation Input

Abstract:

Based on the multi-degree of freedom in series model, structural displacement amplitude formula is derived in the frequency domain under the translation-rotation input situation, this formula indicates that the soil - structure interaction (SSI) could be considered as adding a correction term M˜ to the mass matrix of the structure with the hypothesis of Rigid foundation. This corrected mass matrix is actually a complex matrix, which related to the input frequency and damping. Equivalent translation-rotation input is coupled with two translation input components U* and Θ*. Besides, we uses case analysis to explain the characteristics of soil - structure interaction (SSI) in frequency domain by the end of this paper.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 1457-1463
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.1457
• Online since: December 2014
• Authors: Liang Fang, Qi Fang Wang*
• Keywords: Frequency Domain, Multi-Degree-Freedom Model, Rotation Input, SSI Effect, Translation Input

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