๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

IDENTIFICATION OF DAMPING MATRICES FROM MEASURED FREQUENCY RESPONSE FUNCTIONS

โœ Scribed by J.-H. LEE; J. KIM

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
339 KB
Volume
240
Category
Article
ISSN
0022-460X

No coin nor oath required. For personal study only.

โœฆ Synopsis

An improved method to identify damping characteristics of a dynamic system is developed. The method identi"es damping characteristics of the system in matrix forms directly from its measured frequency response functions. Each di!erent damping mechanism is identi"ed in a distinct matrix. Theoretical validation and related error analysis are conducted by applying the method to a simple lumped parameter system. The method is implemented experimentally to a thin beam of two di!erent damping con"gurations. The experimental results demonstrate that the method will work well with realistic problems. Important advantages of the method and potential applications are explained.

๐Ÿ“œ SIMILAR VOLUMES

IN-SERVICE IDENTIFICATION OF NON-LINEAR
IN-SERVICE IDENTIFICATION OF NON-LINEAR DAMPING FROM MEASURED RANDOM VIBRATION
โœ D.V. IOURTCHENKO; M.F. DIMENTBERG ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 103 KB

A non-linearly damped single-degree-of-freedom (s.d.o.f.) system under broadband random excitation is considered. A procedure for in-service identi"cation of the damping characteristic from measured stationary response is described. The procedure is based on the stochastic averaging method. The expl

IDENTIFICATION TECHNIQUES OF STRUCTURE C
IDENTIFICATION TECHNIQUES OF STRUCTURE CONNECTION PARAMETERS USING FREQUENCY RESPONSE FUNCTIONS
โœ H.Y. Hwang ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 194 KB

The identification method for stiffness constant parameters and damping coefficient parameters of connections using test data is derived when a structure is attached to another structure via connections. Because of the inherent difficulties of deriving spatial models from test data, the frequency re

PROPERTY MATRICES IDENTIFICATION OF UNBO
PROPERTY MATRICES IDENTIFICATION OF UNBOUNDED MEDIUM FROM UNIT-IMPULSE RESPONSE FUNCTIONS USING LEGENDRE POLYNOMIALS: FORMULATION
โœ PARONESSO, A.; WOLF, J. P. ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 902 KB

A systematic procedure to construct the (symmetric) static-stiffness, damping and mass matrices representing the unbounded medium is presented addressing the unit-impulse response matrix corresponding to the degrees of freedom on the structure-medium interface. The unit-impulse response matrix is fi

IDENTIFICATION OF ROTOR-BEARING SYSTEMS
IDENTIFICATION OF ROTOR-BEARING SYSTEMS IN THE FREQUENCY DOMAIN PART I: ESTIMATION OF FREQUENCY RESPONSE FUNCTIONS
โœ FRANK PEETERS; RIK PINTELON; JOHAN SCHOUKENS; YVES ROLAIN; ENRIQUE S. GUTIERREZ; ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 434 KB

This paper discusses the non-parametric identi"cation if MIMO rotor-bearing systems in the frequency domain for real as well as for complex modal testing. The FRFs are estimated on the basis of the maximum likelihood estimator, considering noise on both inputs and outputs (error-in-variables model).

PROPERTY MATRICES IDENTIFICATION OF UNBO
PROPERTY MATRICES IDENTIFICATION OF UNBOUNDED MEDIUM FROM UNIT-IMPULSE RESPONSE FUNCTIONS USING LEGENDRE POLYNOMIALS: IMPLEMENTATION AND EXAMPLES
โœ PARONESSO, A.; WOLF, J. P. ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 576 KB

The input and other implementation issues for the system identification procedure addressing the unit-impulse response matrix based on Legendre polynomials in the time domain to calculate the static-stiffness, damping and mass matrices of an unbounded medium are discussed. Clear guidelines are provi