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Vibration Characteristics of Partially Covered Double-Sandwich Cantilever BeamThe differential equations of motion together with the boundary conditions for a partially covered, double-sandwich cantilever beam are derived. Bending and extension, rotational and longitudinal inertia of damping layers, and shear deformation and rotational and longitudinal inertia of the constraining layers and the primary beam are included in the equations. The theory is applicable for long as well as short, soft, or stiff damping layer, double-sandwich beams. Also, the effects of different parameters on the system loss factor and resonance frequency are discussed. Differences are found to exist with the previous beam model (called the Euler beam model) when the damping layers are stiff, when the thickness of the damping layer is large compared to the primary-beam thickness, and in the case of higher modes of vibration.
Document ID
19990094057
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Chen, Qinghua
(Florida International Univ. Miami, FL United States)
Levy, Cesar
(Florida International Univ. Miami, FL United States)
Date Acquired
August 19, 2013
Publication Date
December 1, 1996
Publication Information
Publication: AIAA Journal
Volume: 34
Issue: l 12
Subject Category
Structural Mechanics
Funding Number(s)
CONTRACT_GRANT: NAG1-1787
Distribution Limits
Public
Copyright
Other

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