SI기법 적용을 위한 최적 모델의 선택
Selection of Optimal Model for Structural System Identification
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초록
모드자료를 이용한 SI기법을 효과적으로 적용하기 위하여 최적 모델을 선택하는 방법을 제안하였다. 축소된 유한요소 모델 대신 가능한 상세한 유한요소 모델을 정하고 SI기법으로 식별하였다. 다만 미지변수의 수를 조절하기 위하여 부재그룹 개념을 도입하였다. 최적 모델은 시도된 부재그룹 경우 중에서 최소의 통계적 오차를 갖는 것으로 선택하였다. 본 논문에서는 단경간 box-girder교에 대한 예제 수행을 통하여 제안된 방법을 검토하였다.
Abstract
A methodology of selecting an optimal model is proposed for applying a frequency-domain SI method effectively. Instead of using a reduced finite element model, a reasonably detail finite element model is established first and then the model is identified. To satisfy the identifiability criterion, a parameter grouping scheme is applied to control the number of unknowns. Among the simulated member grouping cases, an optimal model is selected as the one with the minimal statistical error. The proposed approach has been examined through simulation studies on a single span box-girder bridge.
참고문헌 (12)
- "Information theory and an extension of the maximum likelihood principle", budapest, pp.1972~
- "a criterion for automatic model selection Self-organizing Methods in Modeling"
- "Sensitivity of static and dynamic parameters to damage on a cable-stayed bridge", (2-4 september), pp.2004~, Seoul Korea
- "Crack identification in a cantilever beam from measured modal response", pp.527~545
- "The use of reduced finite element models in system identification", pp.1989~
- "Correlation of analysis and test in modeling of structures assessment and review", 1987, pp.1651~1660
- "Test-analysis-model development using an exact modal reduction Journal of Modal Analysis", pp.174~179 (1987)
- "Statistical treatment of modeling errors for system identification with L1-regularization", pp.2004~, Seoul
- "Determination of optimal regularization factor in system identification with Tikhonov regularization for linear elastic continua", pp.1211~1230
- "System Identification of Vibrating Structure" (1972)
- "Damage detection and assessment of structural systems from measured response"
- "Model error correction from truncated modal flexibility sensitivity and genetic parameters. I simulation", pp.1381~1419 (2004)