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A finite element model for sandwich viscoelastic beams: Experimental and numerical assessment

✍ Scribed by F.S. Barbosa; M.C.R. Farage

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
790 KB
Volume
317
Category
Article
ISSN
0022-460X

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✦ Synopsis

Among the passive control systems for attenuation of vibrations in structures, those that use viscoelastic materials as a damping core in laminated-plate-like components are focused herein. In the present work an assessment of a time-domain formulation for numerical modelling of viscoelastic materials is made. This formulation, which is called Golla-Hughes method (GHM), is based on a second-order time-domain realization of Laplace-domain motion equations. The GHM parameters used in the characterization of a viscoelastic material are experimentally determined and a sandwich GHMbased finite element model is presented and validated through numerical comparisons with classic formulation results. Finally, a time-domain simulation of an experimentally tested sandwich beam is carried out.

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