Fast dynamic solver for the design of bridge using a model order reduction

Mitsuteru Asai, Hiroki Iida, Norliyati M. Amin, Yoshimi Sonoda

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

A model order reduction via Krylov subspace has been utilized as a booster of the finite element analysis in this paper. In the seismic design of structures, low frequency responses up to about 20Hz should be accurately predicted. A stepwise iterative frequency response analysis is utilized to evaluate an effective reduced order to maintain the accuracy at the target frequency range. In the frequency analysis, simple error estimation is performed to check the comparison is supported by the Moment Matching (MM), which is one of the important approximation properties of the KS-MOR. In the numerical example, a 3D bridge model with different bearing system was solved to show performance of KS-MOR. One of the bearing system is classical steel hinge, the other is steel laminated rubber bearing. The KS-MOR can apply to the general dynamic structure analysis including the damping matri. The efficiency in the CPU time is about 20-30 times faster than the conventional FEM calculation.

本文言語英語
ホスト出版物のタイトルProceedings of the 9th International Conference on Shock and Impact Loads on Structures
ページ225-234
ページ数10
出版ステータス出版済み - 2011
イベント9th International Conference on Shock and Impact Loads on Structures - Fukuoka, 日本
継続期間: 11 16 201111 18 2011

出版物シリーズ

名前Proceedings of the 9th International Conference on Shock and Impact Loads on Structures

その他

その他9th International Conference on Shock and Impact Loads on Structures
国/地域日本
CityFukuoka
Period11/16/1111/18/11

All Science Journal Classification (ASJC) codes

  • 土木構造工学

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