Topic
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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01 Jul 2008
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TL;DR: In this paper , a finite element formulation using zig-zag hypothesis is developed for sandwich smart structures with partially smart constrained layer damping (SCLD) treatment, where both of the viscoelastic and elastic layers of the sandwich structures are based on the Reissner-Mindlin theory.
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Journal Article•
TL;DR: Based on the theory of Donnell thin shells and the linear viscoelastic theory, the integrated first order differential matrix equation of a sandwich conical shell with partially ring-shaped constrained layer damping treatment is derived in this paper.
Abstract: Based on the theory of Donnell thin shells and the linear viscoelastic theory,by considering only the shearing deformation of viscoelastic core and adopting an assumption that the complex constant model is simulated as its energy dissipation characteristic,the integrated first order differential matrix equation of a sandwich conical shell with partially ring-shaped constrained layer damping treatment is derived in this paperSince the circumferential curvature is a function of longitudinal coordinate,the coefficient matrix of sandwich conical shell is more complicated than those for cylindrical shell,then a semi-analytical method is developed to analyze the vibration and damping characteristics of a conical shell covered with partially ring-shaped constrained layer damping by means of the high precision direct integration technology and transfer matrix methodNumerical examples show that the proposed approach is effectiveThe effects of varies of parameters,such as coverage percent,on the natural frequency and dissipative factors of a PCLD sandwich conical shell are also discussed,which is also different from PCLD sandwich cylindrical shell
1 citations