Finite Element Model Updating Using Power Spectral Density of Structural Response

Masoud Pedram 1 Akbar Esfandiari 1 Fariba Shadan 1
1 AUT - Amirkabir University of Technology
Abstract : Finite element models (FEM) are used for estimation of the physical behavior of the structures may not accurately represent real structural responses because of inaccurate assumption of mechanical properties. For the achievement of a reliable model, the numerical responses must be adjusted to the experimental or real life responses through a proper model updating scheme. The Power Spectral Density (PSD) of the structural response subjected to a random input is opted in this research for derivation of sensitivity based model updating method. Taylor series expansion of the PSD is used to develop the sensitivity equations. Upon the consideration of all the terms of the expansion, it is possible to take advantage from an already developed method based on frequency response function (FRF). The proposed sensitivity equation has also eliminated the need for model reduction or expansion to deal with incomplete measurement which is required for most of updating methods relying on the modal data. The proposed method is examined using a numerical example to predict changes in stiffness parameters.
Keywords : Finite Elements based SHM Parametric identification Modal analysis
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
Liste complète des métadonnées

Littérature citée [6 références]  Voir  Masquer  Télécharger
https://hal.inria.fr/hal-01021184
Contributeur : Anne Jaigu <>
Soumis le : mercredi 9 juillet 2014 - 10:16:50
Dernière modification le : mercredi 9 juillet 2014 - 15:28:17
Document(s) archivé(s) le : jeudi 9 octobre 2014 - 11:18:44

Fichier

0016.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01021184, version 1

Collections

INSMI | EWSHM2014 | EWSHM-WEBT5

Citation

Masoud Pedram, Akbar Esfandiari, Fariba Shadan. Finite Element Model Updating Using Power Spectral Density of Structural Response. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01021184〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

201

Téléchargements de fichiers

457

Contact


archive-ouverte@inria.fr