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Journal of Intelligent Material Systems and Structures 2008;19:469. A more recent version of this article appeared on April 1, 2008
Graded Finite Element Modeling of Constrained Layer Damping Treatments with Functionally Graded Viscoelastic Material
Department of Mechanical Engineering, College of Engineering and
Petroleum Kuwait University, P.O. Box 5969, Safat 13060, Kuwait
* To whom correspondence should be addressed.
Passive constrained layer damping (PCLD) is a simple, powerful, and successful technique to solve structural vibration problems. The design of PCLD treatments is mainly subject to the physical and geometrical properties of the viscoelastic material. The use of functionally graded viscoelastic (FGV) material as a core layer in beams with PCLD treatments has been introduced by the authors in an earlier work. The main objective of the present work is to develop and formulate a finite element model for beams treated with FGV constrained layer damping. Natural frequencies and modal loss factors obtained by the finite element model are compared to those obtained by the assumed modes method from a previous work and results from both approaches are compared. Key Words: passive constrained layer damping, functionally graded material, finite element, viscoelastic material.
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