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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.79 No.6
- 발행연도
- 2021.9
- 수록면
- 683 - 697 (15page)
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This paper proposes an improved variational mode decomposition (IVMD) algorithm for structural modal parameter estimation based on non-stationary responses. In this improved VMD, the mean envelope entropy (MEE) and particle swarm optimization (PSO) are first employed to determine the optimal decomposition parameters for the subsequent VMD analysis. Then the VMD algorithm is used to decompose the non-stationary data into a number of intrinsic mode functions (IMFs). After obtaining the IMFs based on the IVMD, structural modal parameters such as natural frequencies and damping ratios of civil structures can be determined by using Natural Excitation Technique (NExT) and Direct Interpolating approach (DI). The feasibility and accuracy of the proposed procedure are evaluated by both numerical and full-scale examples. The natural frequencies and damping ratios are successfully identified from the vibration responses with high noise and nonstationary characteristics. The results of this study illustrate that the proposed procedure provides a powerful approach to identify the modal parameters of civil structures using non-stationary responses.
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참고문헌 (40)
참고문헌 신청
Ai, T. J. / 2009 / A particle swarm optimization for the vehicle routing problem with simultaneous pickup and delivery / Comput. Oper. Res. 36(5):1693~1702
Ardakani, A. J. / 2008 / A novel approach for optimal chiller loading using particle swarm optimization / Energy Build 40(12):2177~2187
Bagheri, A. / 2018 / Structural system identification based on variational mode decomposition / J. Sound Vib 417:182~197
Bendat, J. S. / 2010 / Random Data: Analysis and Measurement Procedures / John Wiley & Sons
Bossea, A. / 1998 / Real-time modal parameter estimation using subspace methods : Applications / Mech. Syst. Signal Pr 12(6):809~823
Ardakani, A. J. / 2008 / A novel approach for optimal chiller loading using particle swarm optimization / Energy Build 40(12):2177~2187
Bagheri, A. / 2018 / Structural system identification based on variational mode decomposition / J. Sound Vib 417:182~197
Bendat, J. S. / 2010 / Random Data: Analysis and Measurement Procedures / John Wiley & Sons
Bossea, A. / 1998 / Real-time modal parameter estimation using subspace methods : Applications / Mech. Syst. Signal Pr 12(6):809~823
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