第23回応用力学シンポジウム

Presentation information

一般セッション

一般セッション(第一部門:物理数学力学問題 ー物理現象のモデル化から逆問題までー)

物理数学力学問題 ー物理現象のモデル化から逆問題までーA

Sat. May 16, 2020 9:00 AM - 10:30 AM A会場 (A)

座長:山本 真哉(清水建設㈱)

[S01A-05] Fundamental study on development of data driven earthquake response analysisconsidering geotechnical engineering knowledge

*kosuke nakamura1, yu ohtake2 (1. Niigata University Graduate School, 2. Niigata University)

Keywords:Dynamic Mode Decompsition, Ground response analysis

The authors address at performing ground response analysis using Dynamic Mode Decomposition (DMD). In this study, we attempt to utilize geotechnical engineering knowledge into DMD analysis algorithm by interpreting the physical meaning of the time transition matrix A obtained from DMD analysis. In order to consider the nonstationary of the input seismic motion, we implemented DMD-C which extended the algorithm of DMD for ground response analysis. Finally, we applied this method to a simple example of one-dimensional ground response analysis and verified its effectiveness.