Damping identification in multiple degree-of-freedom systems using an energy balance approach
作者： M Prandina , J E Mottershead , E Bonisoli
DOI: 10.1088/1742-6596/181/1/012006
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摘要: The dissipation of energy in a vibrating structure is often neglected or oversimplified engineering design. However, there are many cases where an accurate model damping necessary and effective identification required order to predict instabilities unwanted vibrations the system. paper presents method which balances input by sinusoidal force with dissipated mechanisms locate identify damping. If complete set measurements available, no need know evaluate mass stiffness matrices only data needed time histories response excited single-frequency harmonic excitations. has been validated numerical simulations tested on real structure, clamped aluminium beam magnetic eddy current dashpot.
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sci-hub.se 参考文章(16)
A. W. Lees, Use of perturbation analysis for complex modes Proceedings of the 17th International Modal Analysis Conference. ,vol. 3727, pp. 779- 784 ,(1999)
Marco Prandina, Elvio Bonisoli, John E Mottershead, Location and Identification of Damping Parameters Proceedings of the 27th IMAC. pp. 1- 9 ,(2009)
P. Lancaster, Expressions for Damping Matrices in Linear Vibration Problems Journal of the Aerospace Sciences. ,vol. 28, pp. 256- 256 ,(1961) , 10.2514/8.8949
K. Nagaya, H. Kojima, Y. Karube, H. Kibayashi, Braking forces and damping coefficients of eddy current brakes consisting of cylindrical magnets and plate conductors of arbitrary shape IEEE Transactions on Magnetics. ,vol. 20, pp. 2136- 2145 ,(1984) , 10.1109/TMAG.1984.1063570
M. I. Friswell, J. E. Mottershead, H. Ahmadian, Combining Subset Selection and Parameter Constraints in Model Updating Journal of Vibration and Acoustics. ,vol. 120, pp. 854- 859 ,(1998) , 10.1115/1.2893911
Jin-Wei Liang, Damping estimation via energy-dissipation method Journal of Sound and Vibration. ,vol. 307, pp. 349- 364 ,(2007) , 10.1016/J.JSV.2007.07.013
Elvio Bonisoli, Alessandro Vigliani, Passive effects of rare-earth permanent magnets on flexible conductive structures Mechanics Research Communications. ,vol. 33, pp. 302- 319 ,(2006) , 10.1016/J.MECHRESCOM.2005.08.011
Marco Prandina, John E. Mottershead, Elvio Bonisoli, An assessment of damping identification methods Journal of Sound and Vibration. ,vol. 323, pp. 662- 676 ,(2009) , 10.1016/J.JSV.2009.01.022
Jin-Wei Liang, Brian F. Feeny, Balancing energy to estimate damping parameters in forced oscillators Journal of Sound and Vibration. ,vol. 295, pp. 988- 998 ,(2006) , 10.1016/J.JSV.2006.01.060
S. Y. Chen, M. S. Ju, Y. G. Tsuei, Estimation of Mass, Stiffness and Damping Matrices from Frequency Response Functions Journal of Vibration and Acoustics. ,vol. 118, pp. 78- 82 ,(1996) , 10.1115/1.2889638