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Applications of the Dynamic Stiffness Matrix (DSM) Based Direct Damping Identification Method
Technical Paper
2005-01-2386
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Two potential applications of a dynamic stiffness matrix (DSM) based direct damping matrix identification method are presented in this paper. The method was proposed to identify both the mechanism and spatial distribution of damping as a matrix of general function of frequency. First potential application is the analytical-experimental hybrid structural dynamics modeling, in which the model is constructed by combining analytically formulated mass and stiffness matrices with the experimentally identified damping matrix. Second application is the direct measurement of complex shear modulus of viscoleastic materials. The real and imaginary parts of the dynamic stiffness measured on a test setup that resembles a single degree of freedom system is used to compute the shear modulus and the loss factor of viscoelastic materials.
Authors
Citation
Ozgen, G. and Kim, J., "Applications of the Dynamic Stiffness Matrix (DSM) Based Direct Damping Identification Method," SAE Technical Paper 2005-01-2386, 2005, https://doi.org/10.4271/2005-01-2386.Also In
References
- HASSELMAN, T. K. “Method for Constructing a Full Modal Damping Matrix from Experimental Measurements” AIAA Journal 10 4 1971 526 527
- LINK, M. “Identification of Physical System Matrices using Incomplete Vibration Test Data” Proceedings of the 4 th International Modal Analysis Conference Los Angeles, CA 1 1986 386 393
- LUK, Y. W. “Identification of Physical Mass, Stiffness and Damping Matrices Using Pseudo-Inverse” Proceedings of the 5 th International Modal Analysis Conference London, England 1 1987 679 685
- SHYE, K. RICHARDSON, M. “Mass, Stiffness, and Damping Matrix Estimates from Structural Measurements” Proceedings of the 5 th International Modal Analysis Conference London, England 1 1987 756 761
- PILKEY, D.F. INMAN, D.J. “An Iterative Approach to Viscous Damping Matrix Identification” Proceedings of the 15 th International Modal Analysis Conference Orlando, FL 1997 104 110
- HENWOOD, D. J. “Approximating the Hysteretic Damping Matrix by a Viscous Matrix for Modeling in the Time Domain” Journal of Sound and Vibration 254 3 2002 575 593
- LAMMENS, S. BRUGHMANS, M. LEURIDAN, J. SAS, P. “Application of a FRF Based Model Updating Technique for the Validation of Finite Element Models of Components of the Automotive Industry” Proceedings of the 1995 Noise and Vibration Conference, SAE International 1 1995 103 115
- CHEN, S. Y. JU, M.S. TSUEI, Y.G. “Stiffness and Damping Matrices from Frequency Response Functions” ASME Journal of Vibration and Acoustics 118 1996 78 82
- IBRAHIM, S. R. D'AMBROGIO, W. SALVINI, P. SESTIERI, A. “Direct Updating of Nonconservative Finite Element Models Using Measured Input-Output” Proceedings of the 10 th International Modal Analysis Conference 1 1992 202 210
- DALENBRING, M. “Damping function estimation based on measured vibration frequency responses and finite-element displacement Modes” Mechanical Systems and Signal Processing 13 1999 547 56
- LEE, J. H. Kim J. “Development and Validation of a New Experimental Method to Identify Damping Matrices of a Dynamic System” Journal of Sound and Vibration 246 3 505 524 2001
- NASHIF, A.D. JONES, D.I.G. HENDERSON, J.P. Vibration Damping Wiley Interscience New York 1985
- JONES, D.I.G. Handbook of Viscoelastic Vibration Damping John Wiley & Sons Ltd. West Sussex 2001
- EDWARDS, J.L. HICKS, D.R. “A Mechanical Impedance Technique for the Measurement of the Dynamic Properties of Materials” Air Force Systems Command Science and Engineering Symposium Dayton, OH 1971
- ALLEN, B.R. “A Direct Complex Stiffness Test System for Viscoelastic Material Properties” SPIE Conference on Smart Structures & Materials San Diego February 1996
- BERMAN, A. “System Identification of Structural Dynamic Models - Theoretical and Practical Bounds” AIAA/ASME/ASCE/AHS 25 th Structures, Structural Dynamics & Materials Conference 1984 123 129
- BERMAN, A. “Inherently Incomplete Finite Element Model and Its Effects on Model Updating” AIAA Journal 38 11 November 2000 2142 2146
- BAGLEY, R.L. Application of Generalized Derivatives to Viscoelasticity Air-Force Materials Laboratory Wright-Patterson Air-Force Base, OH 1979
- “Standard method for measuring vibration-damping properties of materials” Annual book of ASTM standards, ASTM Standard E 756-98 , The American Society for testing Materials Philadelphia, Pennsylvania 4 2001 915 926