Comptes Rendus
A method for the identification of dynamic constraint parameters in multi-supported flexible structures
Comptes Rendus. Mécanique, Volume 345 (2017) no. 4, pp. 239-247.

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

Published online:
DOI: 10.1016/j.crme.2017.02.002
Keywords: Identification of support parameters, Regularization of inverse problems, Multi-supported structures, Structural modifications

Ahmad Baklouti 1, 2; José Antunes 1; Vincent Debut 1; Tahar Fakhkakh 2; Mohamed Haddar 2

1 Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, Km 139.7, 2695-066 Bobadela LRS, Portugal
2 Laboratory of Mechanics Modeling and Production (LA2MP), National School of Engineers of Sfax, University of Sfax, BP N° 1173-3038, Sfax, Tunisia
     author = {Ahmad Baklouti and Jos\'e Antunes and Vincent Debut and Tahar Fakhkakh and Mohamed Haddar},
     title = {A method for the identification of dynamic constraint parameters in multi-supported flexible structures},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {239--247},
     publisher = {Elsevier},
     volume = {345},
     number = {4},
     year = {2017},
     doi = {10.1016/j.crme.2017.02.002},
     language = {en},
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AU  - Tahar Fakhkakh
AU  - Mohamed Haddar
TI  - A method for the identification of dynamic constraint parameters in multi-supported flexible structures
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%A José Antunes
%A Vincent Debut
%A Tahar Fakhkakh
%A Mohamed Haddar
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Ahmad Baklouti; José Antunes; Vincent Debut; Tahar Fakhkakh; Mohamed Haddar. A method for the identification of dynamic constraint parameters in multi-supported flexible structures. Comptes Rendus. Mécanique, Volume 345 (2017) no. 4, pp. 239-247. doi : 10.1016/j.crme.2017.02.002.

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