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Title
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Analysis of a Five-Layer, Viscoelastic, Constrained-Layer Beam
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Report Number
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WL-TR-91-3078 Volume I, p. CCB-1 thru CCB-32
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Creator
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Falugi, Michael
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Corporate Author
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WRDC/FIBAA, Wright-Patterson AFB
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Laboratory
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Wright Laboratory
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Date
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1991
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Date Issued
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1991-08
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Extent
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32
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Contract
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Laboratory Research - No Contract
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DoD Project
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2401
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DoD Task
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240104
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Format
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1 online resource
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Abstract
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This paper documents the analysis and application of the five-layer beam damping system which consists of: undamped beam (layer 1 ), adhesive layer (layer 2), stand-off spacing (layer 3), viscoelastic damping material (layer 4), and constraining layer (layer 5). It includes the derivation of equations and development of the general-purpose computer program to compute and provide graphical plots of modal loss factor, modal frequency, RMS response and peak resonance, each as a function of temperature. Parametric results are presented for variation in thickness of each layer (except the undamped beam layer). This technology can be used by designers as a means of estimating damping in beam-like structures with viscoelastic constrained-layer damping.
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Description
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This paper documents the analysis and application of the five-layer beam damping system which consists of: undamped beam (layer 1 ), adhesive layer (layer 2), stand-off spacing (layer 3), viscoelastic damping material (layer 4), and constraining layer (layer 5). It includes the derivation of equations and development of the general-purpose computer program to compute and provide graphical plots of modal loss factor, modal frequency, RMS response and peak resonance, each as a function of temperature. Parametric results are presented for variation in thickness of each layer (except the undamped beam layer). This technology can be used by designers as a means of estimating damping in beam-like structures with viscoelastic constrained-layer damping.
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Distribution Classification
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1
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Distribution Conflict
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No
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DTIC Record Exists
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No
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Illinois Tech Related
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No
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Photo Quality
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Not Needed
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Report Availability
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Full text available
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Type
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article
article20