Journal ArticleDOI
Vibration and damping analysis of a multilayered cylindrical shell. I - Theoretical analysis
Naiyar Alam,N. T. Asnani +1 more
TLDR
In this article, the governing equations of motion for the nonaxisymmetric and axisymmetric variational of a general multilayered cylindrical shell having an arbitrary number of orthotropic material layers have been derived using variational principles.Abstract:
The governing equations of motion for the nonaxisymmetric and axisymmetric variational of a general multilayered cylindrical shell having an arbitrary number of orthotropic material layers have been derived using variational principles. The refined analysis considers bending, extension, and shear deformations in all layers of a multilayered cylindrical shell, including rotary and longitudinal translatory as well as transverse inertias. The solution for a radially simply supported shell has been obtained and the procedure for determining the damping effectiveness in terms of the system loss factor for all families of the modes of vibration in a multilayered shell with elastic and viscoelastic layers is reported. Numerical results are reported in Part II of the paper.read more
Citations
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Journal ArticleDOI
Minimizing vibration response of cylindrical shells through layout optimization of passive constrained layer damping treatments
TL;DR: In this article, a layout optimization of passive constrained layer damping (PCLD) treatment for minimizing the vibration response of cylindrical shells is presented with consideration of broadband transverse force excitation.
Journal ArticleDOI
Active constrained layer damping of thin cylindrical shells
Maharshi Ray,J. Oh,Amr M. Baz +2 more
TL;DR: In this article, the active constrained layer damping (ACLD) treatments in enhancing the damping characteristics of thin cylindrical shells is presented. And the results suggest the potential of the ACLD treatments in controlling the vibration of cylinear shells which constitute the major building block of many critical structures such as cabins of aircrafts, hulls of submarines and bodies of rockets and missiles.
Journal ArticleDOI
The Galerkin element method applied to the vibration of damped sandwich beams
M.G. Sainsbury,Q.J. Zhang +1 more
TL;DR: In this article, a finite element for damped sandwich beam structures is presented, which combines the polynomial shape functions of conventional finite element analysis with Galerkin orthogonal functions.
Journal ArticleDOI
An amplitude equation for the non-linear vibration of viscoelastically damped sandwich beams
TL;DR: In this paper, an elementary theory for non-linear vibrations of viscoelastic sandwich beams is presented, where the harmonic balance method is coupled with a one mode Galerkin analysis.
Journal ArticleDOI
A simple spinning laminated composite shaft model
TL;DR: In this paper, a simple spinning composite shaft model is presented, where the composite shaft contains discrete isotropic rigid disks and is supported by bearings that are modeled as springs and viscous dampers.
References
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Book
Vibration of shells
Arthur W. Leissa,R. P. Nordgren +1 more
TL;DR: In this paper, the vibrational characteristics and mechanical properties of shell structures are discussed, including the fundamental equations of thin shell theory, the characteristics of thin circular cylindrical shells, the complicating effects of noncircular cylinders, the properties of spherical shells and the solution of three-dimensional equations of motion for cylinders.
Journal ArticleDOI
Free Vibrations of Multilayer Anisotropic Cylindrical Shells
TL;DR: A theoretical analysis for determining the free vibra tional characteristics of thin-walled, circular cylindrical shells with layers of anisotropic elastic material arbitrarily laminated.
Journal ArticleDOI
Small bending and stretching of sandwich-type shells
TL;DR: In this article, a theory for small bending and stretching of sandwich-type shells was developed, which is an extension of the known theory of homogeneous thin elastic shells and has been applied to the solution of problems concerning flat plates, circular rings, circular cylindrical shells, and spherical shells.
Journal ArticleDOI
Axisymmetrical vibrations of a circular sandwich shell with a viscoelastic core layer.
TL;DR: In this paper, the partial differential equation of motion of a finite-length cylindrical sandwich shell with a viscoelastic core layer is derived, and the solution of this differential equation subject to satisfying the boundary conditions, which have been discussed in detail, yields the frequency equation and corresponding composite loss-factors.
Journal ArticleDOI
Vibration and Damping Analysis of a Multilayered Cylindrical Shell, Part 11: Numerical Results
Naiyar Alam,N. T. Asnani +1 more
TL;DR: In this paper, the authors present a solution de l'analyse de vibration and d'amortissement d'une coque cylindrique generale a plusieurs couches, composee d'un nombre arbitraire de couches viscoelastiques and elastiques d'Un materiau orthotrope, avec des conditions de simple supportage aux extremites.
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