AUTHOR=Nakamura Naohiro TITLE=Three-Dimensional Energy Transmitting Boundary in the Time Domain JOURNAL=Frontiers in Built Environment VOLUME=1 YEAR=2015 URL=https://www.frontiersin.org/journals/built-environment/articles/10.3389/fbuil.2015.00021 DOI=10.3389/fbuil.2015.00021 ISSN=2297-3362 ABSTRACT=

Although the energy transmitting boundary (TB) is accurate and efficient for the finite element method earthquake response analysis, it could be applied in the frequency domain only. In the previous papers, the author proposed an earthquake response analysis method using the time domain energy TB for two-dimensional (2D) problems. In this paper, this technique is expanded for three-dimensional (3D) problems. The inner field is supposed to be a hexahedron shape, and the approximate time domain boundary is explained, first. Next, 2D antiplane time domain boundary is studied for a part of the approximate 3D boundary method. Then, accuracy and efficiency of the proposed method are confirmed by example problems.