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Constrained-layer damping

About: Constrained-layer damping is a research topic. Over the lifetime, 795 publications have been published within this topic receiving 15758 citations.


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Proceedings ArticleDOI
05 May 1995
TL;DR: In this article, the damping effects due to viscoelastic material which has an active constraining layer is modeled using the Golla-Hughes-McTavish (GHM) damping method.
Abstract: Viscoelastic material (VEM) adds damping to structures. In order to enhance the damping effects of the viscoelastic material, a constraining layer is attached. If this constraining layer is a piezoelectric patch, the system is said to have active constrained layer damping (ACLD). In this paper, the damping effects due to viscoelastic material which has an active constraining layer is modeled using the Golla-Hughes-McTavish (GHM) damping method. The piezoelectric patch and structure are modeled using a Galerkin approach in order to account for the effect of the constraining layer on the beam.

24 citations

Journal ArticleDOI
TL;DR: In this paper, the performance of active constrained layer damping (ACLD) treatment for active structural-acoustic control of a vibrating thin laminated cylindrical panel has been investigated.

23 citations

Journal ArticleDOI
TL;DR: In this article, a stand-off-layer between the viscoelastic layer and the base beam is added to improve the performance of the passive constrained layer damping treatment.

23 citations

Journal ArticleDOI
TL;DR: In this article, the electromechanical surface damping technique (EMSD) is applied to suppress the bending and twisting (torsional) peak vibration amplitudes of a cantilever plate.
Abstract: The electromechanical surface damping technique (EMSD) is applied to suppress the bending and twisting (torsional) peak vibration amplitudes of a cantilever plate. The technique is a combination of the constrained layer damping (CLD) and the shunted piezoelectric methods in which the constraining layer of the CLD is replaced by a shunted piezoelectric ceramic. The frequency responses, to a white noise random base excitation, of the EMSD-treated plate at the vicinity of the first and second bending and twisting resonant frequencies are determined and compared with the corresponding responses of the CLD treatment. It is shown that, in general, the EMSD treatment provides more suppression of the bending and twisting peak vibration amplitudes than the conventional CLD treatment. The EMSD treatment, however, is more effective at higher frequencies and lower temperatures, which suggests that the EMSD method can be applied to extend the effective range of frequencies and/ or temperatures of the conventional CLD method. The work presented is primarily analytical; however, a crude and preliminary experimental work is presented to demonstrate the feasibility of the EMSD technique.

23 citations

Journal ArticleDOI
TL;DR: In this paper, the authors analyzed the three-dimensional electromechanical deformations of a thin laminated plate with layers made of aluminum, a viscoelastic material and a piezoceramic (PZT).
Abstract: We analyze, numerically by the finite element method, three-dimensional electromechanical deformations of a thick laminated plate with layers made of aluminum, a viscoelastic material and a piezoceramic (PZT). Two arrangements of layers are considered. In one case a central PZT layer is surrounded on both sides by viscoelastic layers and aluminum layers are on the outside surfaces. The PZT is poled in the longitudinal direction and an electric field is applied to it in the transverse direction. Thus shearing deformations of the PZT layer dominate over its extensional deformations. In the second arrangement, the aluminum layer is in the middle and the PZT layers are on the outside. The poling direction and the electric field are along the thickness of the PZT layer. Extensional deformations of the PZT layer are significantly more than its shearing deformations. The problem formulation incorporates geometric nonlinearities and the constitutive relation for the PZT includes quadratic terms in the electric fi...

23 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202310
202227
202123
202020
201927
201826