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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.75 No.4
- 발행연도
- 2020.1
- 수록면
- 477 - 485 (9page)
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초록· 키워드
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Finite element (FE) model based structural damage detection (SDD) methods play vital roles in effectively locating and quantifying structural damages. Among these methods, structural model updating should be conducted before SDD to obtain benchmark models of real structures. However, the characteristics of updating parameters are not reasonably considered in existing studies. Inspired by the l∞ norm regularization, a novel anti-sparse representation method is proposed for structural model updating in this study. Based on sensitivity analysis, both frequencies and mode shapes are used to define an objective function at first. Then, by adding l∞ norm penalty, an optimization problem is established for structural model updating. As a result, the optimization problem can be solved by the fast iterative shrinkage thresholding algorithm (FISTA). Moreover, comparative studies with classical regularization strategy, i.e. the l2 norm regularization method, are conducted as well. To intuitively illustrate the effectiveness of the proposed method, a 2-DOF spring-mass model is taken as an example in numerical simulations. The updating results show that the proposed method has a good robustness to measurement noises. Finally, to further verify the applicability of the proposed method, a six-storey aluminum alloy frame is designed and fabricated in laboratory. The added mass on each storey is taken as updating parameter. The updating results provide a good agreement with the true values, which indicates that the proposed method can effectively update the model parameters with a high accuracy.
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참고문헌 (40)
참고문헌 신청
Vikas Arora / 2014 / FE model updating method incorporating damping matrices for structural dynamic modifications / Structural Engineering and Mechanics, An Int＇l Journal 52(2):261~274
Avitabile, P. / 2010 / Can the shaker stinger have any effect on the frequency response measurements? / Exp. Tech 34(3):11~12
Batou, A. / 2019 / A sensitivity-based one-parameter-at-a-time model updating method / Mech. Syst. Signal Process 122:247~255
Behmanesh, I. / 2018 / Uncertainty quantification and propagation in dynamic models using ambient vibration measurements, application to a 10-story building / Mech. Syst. Signal Process 107:502~514
Cadzow, J. / 1971 / Algorithm for the minimum-effort problem / IEEE Trans. Automat. Contr 16(1):60~63
Avitabile, P. / 2010 / Can the shaker stinger have any effect on the frequency response measurements? / Exp. Tech 34(3):11~12
Batou, A. / 2019 / A sensitivity-based one-parameter-at-a-time model updating method / Mech. Syst. Signal Process 122:247~255
Behmanesh, I. / 2018 / Uncertainty quantification and propagation in dynamic models using ambient vibration measurements, application to a 10-story building / Mech. Syst. Signal Process 107:502~514
Cadzow, J. / 1971 / Algorithm for the minimum-effort problem / IEEE Trans. Automat. Contr 16(1):60~63
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