Analysis of a Five-Layer, Viscoelastic, Constrained-Layer Beam
Report Number: WL-TR-91-3078 Volume I, p. CCB-1 thru CCB-32
Author(s): Falugi, Michael
Corporate Author(s): WRDC/FIBAA, Wright-Patterson AFB
Laboratory: Wright Laboratory
Date of Publication: 1991-08
Pages: 32
Contract: Laboratory Research - No Contract
DoD Project: 2401
DoD Task: 240104
Abstract:
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.
Author(s): Falugi, Michael
Corporate Author(s): WRDC/FIBAA, Wright-Patterson AFB
Laboratory: Wright Laboratory
Date of Publication: 1991-08
Pages: 32
Contract: Laboratory Research - No Contract
DoD Project: 2401
DoD Task: 240104
Abstract:
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.