Journal ArticleDOI
Buckling and Vibration Behavior of a Viscoelastic Sandwich Cylinder under Thermal Environment
TLDR
In this paper, the buckling and vibration behavior of a viscoelastic sandwich cylinder in a thermal environment analyzed using the semi analytical finite element method is presented, and the analysis is carried out using a decoupled thermo mechanical formulation.Abstract:
This paper presents the buckling and vibration behavior of a viscoelastic sandwich cylinder in a thermal environment analyzed using the semi analytical finite element method. The analysis is carried out using a decoupled thermo mechanical formulation. The temperature field in the shell domain is evaluated using an eight-noded axisymmetric ring element. Buckling and vibration analyses are carried out using a two-noded sandwich shell element in the semi-analytical finite element method. Buckling temperatures are calculated for sandwich shells with two different core materials. The effect of temperature-dependent core shear modulus on buckling temperature and vibration behavior has been investigated for sandwich shells with different mechanical boundary conditions. Variations of natural frequencies and loss factors with temperature have also been examined for sandwich shells with two different core materials.read more
Citations
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Journal ArticleDOI
Nonlinear thermomechanical dynamic buckling analysis of imperfect viscoelastic composite/sandwich shells by a double-superposition global-local theory and various constitutive models
TL;DR: In this article, a high-order double-superposition global-local theory is proposed and employed for nonlinear dynamic buckling and postbuckling analyses of imperfect viscoelastic composite/sandwich cylindrical shells subjected to thermomechanical loads.
Journal ArticleDOI
Thermal post-buckled behaviors of cylindrical composite shells with viscoelastic damping treatments
TL;DR: In this article, a finite element method for the vibration and damping analyses of the thermal post-buckled cylindrical composite shells with damping treatments was developed adopting the layerwise displacement field theory.
Journal ArticleDOI
Buckling and Free Vibrations of Sandwich General shells of Revolution with Composite facings and Viscoelastic core under Thermal Environment using Semi-analytical Method
TL;DR: In this paper, the buckling and free vibration behavior of general shells of revolution under thermal environment using Wilkins theory was studied and the numerical analysis is based on the semi-analytical finite element method applicable to thick shells.
Journal ArticleDOI
Effect of Mode Shape Switching on the Loss Factor of Sandwich Cylinders
TL;DR: Damping characteristics of three-layered sandwich cylindrical shells with the focus on mode switching phenomenon are investigated in this article. All layers of the sandwich cylinder are formulae with different modes.
Journal ArticleDOI
Dynamic pulse buckling and failure analysis of the single curved composite sandwich panel using the core high-order theory:
TL;DR: In this paper, the authors investigate the facesheet dynamic pulse buckling of simply supported, cylindrical composite sandwich panels using the Budiansky-Roth buckling criterion.
References
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Journal ArticleDOI
Bending and vibration of multilayer sandwich beams and plates
T. P. Khatua,Y.K. Cheung +1 more
TL;DR: In this paper, a finite element displacement analysis of multilayer sandwich beams and plates, each with n stiff layers and n−1 weak cores, is presented, where each layer has individual orthotropic properties of its own and the bending rigidities of the stiff layers are taken into account while direct stresses in cores are neglected in the analysis.
Journal ArticleDOI
Iterative algorithms for non-linear eigenvalue problems. Application to vibrations of viscoelastic shells
TL;DR: In this paper, two numerical iterative algorithms are developed for the vibrations of damped sandwich structures, which can be applied to large scale structures, to large damping and to strongly non-linear viscoelastic modulus.
Journal ArticleDOI
Buckling of cylindrical sandwich shells with metal foam cores
John W. Hutchinson,M.Y. He +1 more
TL;DR: In this article, the authors examined the interaction between imperfections and plastic yielding to see if buckling load knockdowns should be larger than those expected for elastic shells, especially in light of the coincidence of elastic buckling and face sheet yielding in the optimally designed perfect shell.
Journal ArticleDOI
Analysis of damping characteristics for viscoelastic laminated beams
Tso-Liang Teng,Ning-Kang Hu +1 more
TL;DR: In this paper, the authors analyzed the design parameters for constrained layer damping structures by employing the Ross-Kerwin-Ungar (RKU) model and discussed the effects of temperature, frequency and the dimensions of damped structures on vibration damping characteristics.
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