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research article

Numerical-experimental identification of the elastic and damping properties in composite plates

Matter, M.  
•
Gmür, Th.  
•
Cugnoni, J.  
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2009
Composite Structures

A novel method is presented for estimating the elastic and dissipative parameters of composite plates and shells through a mixed numerical-experimental identification procedure based on the natural frequencies, modal damping factors and mode shapes of the specimen under investigation. The modal quantities are measured with an optimized contact-free experimental setup using a loudspeaker for exciting the structure and a scanning laser interferometer for measuring the dynamic response. The corresponding numerical predictions are obtained with an accurate shell element model derived from the higher-order shear deformation theory and including a structural damping mechanism. Adequate objective functions relying on the discrepancy between the experimental and numerical modal data are developed for the parameter estimation. The proposed procedure is next applied to three test cases and the results obtained show that all the elastic properties and the major damping parameters can be estimated with a high accuracy. (C) 2009 Elsevier Ltd. All rights reserved.

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Type
research article
DOI
10.1016/j.compstruct.2009.03.001
Web of Science ID

WOS:000266857000009

Author(s)
Matter, M.  
Gmür, Th.  
Cugnoni, J.  
Schorderet, A.  
Date Issued

2009

Published in
Composite Structures
Volume

90

Issue

2

Start page

180

End page

187

Subjects

Damping

•

Elastic properties

•

Finite element analysis

•

Modal analysis

•

Mixed numerical-experimental identification

•

Orthotropic Cylindrical-Shells

•

Viscoelastic Properties

•

Finite-Elements

•

Vibration

•

Parameters

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMAF  
Available on Infoscience
July 29, 2009
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/41830
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