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Cable Modal Parameter Identification. I: Theory
Journal of Engineering Mechanics, 2009Cable modal parameters (natural frequencies and damping ratios) that represent the cable inherent dynamic characteristics play an important role in the construction, vibration control, condition assessment, and long-term health monitoring of cable-supported structures.
Wei-Xin Ren, Wei-Hua Hu
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Modal parameter estimation from base excitation
Journal of Sound and Vibration, 1986Current software packages used for modal parameter identification are based on measured frequency response of either a fixed structure having no rigid body modes or a free structure with flexible supports. Procedures are now available to extract complex modes with the usual assumptions that the mass, stiffness and damping matrices are symmetric. In the
J.-G. Béliveau +3 more
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Identification of Modal Parameters with Unknown Input
2003The techniques developed for structural identification are typically devoted to obtain a structural model on the base of information on the response and on the forcing action. In many situations, however, it can be necessary to refer only to the measured responses.
DE ANGELIS, Maurizio +2 more
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Autonomous Modal Parameter Estimation: Methodology
Traditionally, the estimation of modal parameters from a set of measured data has required significant experience. However, as the technology has matured, increasingly, analysis is being performed by less experienced engineers or technicians. To address this development, frequently software solutions are focusing upon either wizard-based or autonomous ...A.W. Phillips, R.J. Allemang, D.L. Brown
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Modal Parameter Estimation on Automotive Development
SAE Technical Paper Series, 2012<div class="section abstract"><div class="htmlview paragraph">Modal parameter identification is used to identify those parameters of the model which describe the dynamic properties of a vibration system. Structural dynamic methods and technologies have been used with great success by the automotive industry.
Valdinei Sczibor +2 more
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Parameter Identifiability Analysis by Modal Methods
IFAC Proceedings Volumes, 1982Abstract Several techniques are available for a priori existence and uniqueness analysis (testing system and parameter identiflability) in the identification of linear models of specified structure from experiments with restricted input and observations.
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Method for determining modal parameters
2019The present invention relates to a method for determining modal parameters of a system under test. The method comprises the steps of - taking a first set of values of output signals obtained under a first loading condition of the system, - determining for said first loading condition a parametric matrix model for the system, said parametric matrix ...
Guillaume, Patrick +3 more
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Modal Parameter Identification from Ambient Response
AIAA Journal, 1999Dar-Yun Chiang, Ming-Si Cheng
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Identification of time varying modal parameters
The Aeronautical Journal, 1990AbstractThe ability to track time varying frequency and damping parameters using on-line versions of seven time domain system identification algorithms; Least Squares, Double Least Squares, Correlation Fit, Instrumental Variables, Instrumental Matrix with Delayed Observations, Extended Least Squares and Maximum Likelihood, is examined.
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Autonomous Modal Parameter Estimation: Application Examples
Autonomous modal parameter estimation is an attractive approach when estimating modal parameters (frequency, damping, mode shape, and modal scaling) as long as the results are physically reasonable. Frequently, significant post processing is required to tune the autonomous estimates.D.L. Brown, R.J. Allemang, A.W. Phillips
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