A method for the identification of dynamic constraint parameters in multi-supported flexible structures

Vincent Debut, J. Antunes, A. Baklouti, T. Fakhfakh, M. Haddar

Research output: Contribution to journalArticle

Abstract

In this paper, a new method for identifying the dynamical parameters of local constraining supports such as mass, stiffness, and damping was developed through combining the measured frequency transfer functions and structural modification techniques. Since measurement noise often leads to erroneous identifications, regularization techniques have been implemented to reduce noise amplification in the inverse problem. The developed technique has been validated by numerical tests on a multi-supported flexible structure, which can be seen as an idealized electricity generator rotor shaft. The results are satisfactory for noise-free data as well as under realistic noise levels. The sensitivity of the identified support features to noise levels is asserted through a parametric study
Original languageEnglish
Pages (from-to)239-247
Number of pages9
JournalComptes Rendus Mecanique
Issue number345(4)
DOIs
Publication statusPublished - 2017

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Flexible structures
Inverse problems
Probability density function
Amplification
Transfer functions
Electricity
Rotors
Damping
Stiffness

Keywords

  • Identification of support parameters
  • Regularization of inverse problems
  • Multi-supported structures
  • Structural modifications

Cite this

Debut, Vincent ; Antunes, J. ; Baklouti, A. ; Fakhfakh, T. ; Haddar, M. / A method for the identification of dynamic constraint parameters in multi-supported flexible structures. In: Comptes Rendus Mecanique. 2017 ; No. 345(4). pp. 239-247.
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A method for the identification of dynamic constraint parameters in multi-supported flexible structures. / Debut, Vincent; Antunes, J.; Baklouti, A.; Fakhfakh, T.; Haddar, M.

In: Comptes Rendus Mecanique, No. 345(4), 2017, p. 239-247.

Research output: Contribution to journalArticle

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