[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.12989/eas.2012.3.2.097

Two-dimensional energy transmitting boundary in the time domain

Nakamura, Naohiro (Research & Development Institute, Takenaka Corporation)

Publication Information

Earthquakes and Structures / v.3, no.2, 2012 , pp. 97-115 More about this Journal

Abstract

The energy-transmitting boundary, which is used in the well-known finite element method (FEM) program FLUSH, is quite efficient for the earthquake response analysis of buildings considering soil-structure interaction. However, it is applicable only in the frequency domain. The author proposed methods for transforming frequency dependent impedance into the time domain, and studied the time domain transform of the boundary. In this paper, first, the estimation methods for both the halfspace condition under the bottom of the soil model and the pseudo three-dimensional effect were studied with the time domain transmitting boundary. Next, response behavior when using the boundary was studied in detail using a practical soil and building model. The response accuracy was compared with those using viscous boundary, and the boundary that considers the excavation force. Through these studies, the accuracy and efficiency of the proposed time domain transmitting boundary were confirmed.

Keywords

energy transmitting boundary; FEM; time domain; soil-structure interaction; viscous boundary; excavation force;

Citations & Related Records

Reference

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