유한요소 모델 개선기법을 이용한 비비례 감쇠행렬 추정
Identification of a Nonproportional Damping Matrix Using the Finite Element Model Updating
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초록
A new identification method for a nonproportional damping matrix using the finite element (FE) model updating technique is proposed. Mass and stiffness matrices of the undamped system are identified by FE model updating method. Sensitivity analysis is used to update the FE model, and zero frequencies are considered as design parameters to supplement the information of vibration characteristics. The nonproportional damping matrix is identified through the proposed method. A numerical example is considered to verify the performance of the proposed method. As a result, the damping matrix of the nonproportional system is estimated accurately.
Abstract
A new identification method for a nonproportional damping matrix using the finite element (FE) model updating technique is proposed. Mass and stiffness matrices of the undamped system are identified by FE model updating method. Sensitivity analysis is used to update the FE model, and zero frequencies are considered as design parameters to supplement the information of vibration characteristics. The nonproportional damping matrix is identified through the proposed method. A numerical example is considered to verify the performance of the proposed method. As a result, the damping matrix of the nonproportional system is estimated accurately.
참고문헌 (15)
- 민천홍, "주파수 전달함수를 이용한 신 포괄 곡선맞춤법", 한국해양공학회지, 23(6), pp.82~86 (2009), 한국해양공학회
- 이건명, "모형개선을 위한 감쇠행렬 추정법의 비교", 한국소음진동공학회논문집, 20(10), pp.923~930 (2010), 한국소음진동공학회
- 2011 심해저 광물자원 개발사업 보고서 - II, "홍섭", 개발기술 연구, 국토해양부, ~ (2012)
- Brink, A.W., "Automatic Position Control of a 300,000-Ton Ship Ocean Mining System", Proc. Offshore Tech Conf (1981)
- Ewins, D. J., "Modal Testing 2" (2000), RESEARCH STUDIES PRESS LTD
- Friswell, M.I., "Model Reduction using Dynamic and Iterated IRS Techniques", Journal of Sound and Vibration, 186(2), pp.311~323 (1995)
- Friswell, M.I., "Finite Element Model Updating in Structural Dynamics" (1995), Kluwer Academic Publishers
- Hong, S., "Proposed Technologies for Mining Deep-Seabed Polymetallic Nodules, Chap 12 Research and Development of Deep Seabed Mining Technologies for Polymetallic Nodules in Korea", Proc. International Seabed Authority’s Workshop, pp.261~283 (1999)
- Jones, K., "Finite Element Model Updating using Antiresonant Frequencies", Journal of Sound and Vibration, 252(4), pp.717~727 (2002)
- Lee, J.H., "Identification of Damping Matrices form Measured Frequency Response Functions", Journal of Sound and Vibration, 240(3), pp.545~565 (2001)
- Cheonhong Min, "Direct identification of non-proportional modal damping matrix for lumped mass system using modal parameters", Journal of Mechanical Science and Technology, 26(4), pp.993~1002 (2012), 대한기계학회
- Min, C.H., "Finite Element Model Updating with Experimental Natural and Zero Frequencies", International Journal of Offshore and Polar Engineering (2012)
- Mottershead, J. E., "On the zeros of structural frequency response functions and their sensitivities", Mechanical Systems and Signal Processing, 12(5), pp.591~597 (1998)
- Nam, D.H., "Improved Parameter Identification using Additional Spectral Information", International Journal of Solids and Structures, 42, pp.4971~4987 (2005)
- Phani, A.S., "Experimental Identification of Viscous Damping in Linear Vibration", Journal of Sound and Vibration, 19, pp.832~849 (2009)