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Arbitrary active constrained layer damping treatments on beams: Finite element modelling and experimental validation

C. M. A. VASQUES
•
B. R. MACE
•
J. D. RODRIGUES
•
GARDONIO, Paolo
2006
  • journal article

Periodico
COMPUTERS & STRUCTURES
Abstract
This paper concerns the analytical formulation and finite element modelling of arbitrary active constrained layer damping (ACLD) treatments applied to beams. A partial layerwise theory is utilized to define the displacement field of beams with an arbitrary number of elastic, viscoelastic and piezoelectric layers attached to both surfaces, and a fully coupled electro-mechanical theory is considered for modelling the behavior of the piezoelectric layers. The damping of the viscoelastic layers is modelled by the complex modulus approach. The weak forms of the analytical formulation, governing the motion and electric charge equilibrium, are presented. Based on the weak forms, a one-dimensional finite element (FE) model is developed, with the nodal mechanical degrees of freedom being the axial displacement, transverse displacement and the rotation of the mid-plane of the host beam and the rotations of the individual layers, and the electrical elemental degrees of freedom being the electrical potential difference of each piezoelectric layer. Frequency response functions were measured experimentally and evaluated numerically for a freely suspended aluminium beam with an ACLD patch. In order to validate the FE model the results are presented and discussed.
DOI
10.1016/j.compstruc.2006.01.035
WOS
WOS:000240183800002
Archivio
http://hdl.handle.net/11390/855844
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33745339827
http://www.sciencedirect.com/science/article/pii/S0045794906000976
Diritti
metadata only access
Web of Science© citazioni
35
Data di acquisizione
Mar 24, 2024
Visualizzazioni
1
Data di acquisizione
Apr 19, 2024
Vedi dettagli
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