Experimental identification of flexural and shear complex moduli by inverting the Timoshenko beam problem - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Sound and Vibration Année : 2017

Experimental identification of flexural and shear complex moduli by inverting the Timoshenko beam problem

(1, 2) , (1) , (1) , (3)
1
2
3

Résumé

This paper addresses the problem of estimating the local viscoelastic parameters of sandwich beams. An original procedure involving an inverse vibratory method (Force Analysis Technique) and the Timoshenko beam theory is detailed and applied experimentally on a sample presenting a honeycomb core. The major philosophy relies in considering multi-layer beams as equivalent homogeneous structures. This simplified approach is thought to be more representative of the global dynamic behaviour, in addition the reduction of degrees of freedom is obviously an improvement for modelling on Finite Element software. When compared to other usual approaches, the method developed in this paper shows a very good agreement between the experimental sandwich beam and the homogeneous model, which highlights interesting insights for applying it to industrial structures. The local aspect, the robustness and the self-regularization properties are verified on a wide frequency range, making the procedure possibly efficient for characterization of structures on a production line, flaw detection and Structural Health Monitoring.
Fichier principal
Vignette du fichier
Wassereau2017.pdf (1.27 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02111809 , version 1 (16-06-2021)

Licence

Paternité - CC BY 4.0

Identifiants

Citer

Thibault Wassereau, Frédéric Ablitzer, Charles Pezerat, Jean-Louis Guyader. Experimental identification of flexural and shear complex moduli by inverting the Timoshenko beam problem. Journal of Sound and Vibration, 2017, 399, pp.86-103. ⟨10.1016/j.jsv.2017.03.017⟩. ⟨hal-02111809⟩
39 Consultations
59 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More