Abstract
Although the energy transmitting boundary is a very accurate and useful technique for the earthquake response analysis of the soil-structure interaction system, it could be applied only for linear or equivalent linear analyses in the frequency domain. In the previous paper, the author proposed an earthquake response analysis method using the energy transmitting boundary in the time domain. In that analysis, the inner field can be treated as the nonlinear system. Contrary to this, the nonlinear transmitting boundary is proposed in this paper. By using it, all of the inner field, the outer field, and the boundary itself can be treated as the nonlinear system. After its concept and analysis method were explained, the efficiency of the proposed method are confirmed by some example problems.
