Journal ArticleDOI
Free and forced random vibration analysis of sandwich plates with thick viscoelastic cores
TLDR
In this article, free vibrations and the transverse response of sandwich plates with viscoelastic cores under wide-band random excitation are studied with special attention to the so-called pumping, thickness-shear and stretching modes.Abstract:
Free vibrations and the transverse response of sandwich plates with viscoelastic cores under wide-band random excitation is studied with special attention to the so-called pumping, thickness-shear and stretching modes. The quadratic displacement field is adopted for all displacement components of the core to accurately capture the higher modes excited by the wide-band excitation. The Love-Kirchhoff plate theory is used for the face layers. The viscoelastic behavior of the core is modeled by the Golla–Hughes–McTavish method. An analytical solution using the normal mode method is provided for the simply supported boundary conditions by including a different family of modes. The effects of some geometric and material properties on the frequencies, damping ratios and also root mean square responses are explored. The participation of the through-the-thickness deformation in the bending mode vibration of the top layer is also investigated, which is found to be mostly resulting from the second order term of the ...read more
Citations
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Journal ArticleDOI
Vibration and damping characteristics of sandwich plates with viscoelastic core
TL;DR: In this paper, passive constrained layer damping (PCLD) treatments are widely used in engineering practice, however most of the studies concentrate on vibration suppression and noise suppression, and not on noise reduction.
Journal ArticleDOI
A modified Fourier–Ritz solution for vibration and damping analysis of sandwich plates with viscoelastic and functionally graded materials
TL;DR: In this paper, a unified yet accurate solution for vibration and damping analysis of viscoelastic and functionally graded (FG) sandwich plates with arbitrary boundary conditions is provided, which can be universally applicable to all classical boundaries, elastic boundaries and their combinations.
Journal ArticleDOI
Dynamic analysis of a rectangular porous plate resting on an elastic foundation using high-order shear deformation theory:
TL;DR: In this paper, the dynamic analysis of a rectangular plate made of porous materials is presented, where the porous plate is subjected to a dynamic transverse load and is resting on a Pasternak foundation.
Journal ArticleDOI
The effects of nonlinearities on the vibration of viscoelastic sandwich plates
TL;DR: In this article, the effects of different system parameters on the nonlinear estimation of frequencies, damping ratios, and peak response are studied, and the importance of different nonlinear terms arisen from different ordering assumptions is assessed and the ranges of system parameters with higher values of error are identified.
Book ChapterDOI
Multilayer models for composite and sandwich structures
Serge Abrate,Marco Di Sciuva +1 more
TL;DR: In this article, the authors discuss the need for a different approach and then discuss two types of discrete layer approaches: layerwise theories and zigzag theories, which reduce the number of variables by enforcing continuity of the transverse stresses and by describing the kinematics of the deformation in terms of both global and ply-level variables.
References
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Book ChapterDOI
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TL;DR: The application of dimensional analysis to the construction of intermediate asymptotic solutions to problems of mathematical physics can be found in this article, where the authors describe the application of similarity analysis to scaling in deformation and fracture in solids.
Journal ArticleDOI
Damping of Flexural Waves by a Constrained Viscoelastic Layer
TL;DR: In this article, a quantitative analysis of the damping effectiveness of a constrained layer of damping tape is presented, where the loss factor η is defined as the normalized imaginary part of the complex bending stiffness of the damped plate.
Theory and analysis of elastic plates
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Journal ArticleDOI
Modeling of linear viscoelastic space structures
D. J. McTavish,P. C. Hughes +1 more
TL;DR: The GHM method as mentioned in this paper provides viscoelastic finite elements derived from the commonly used elastic finite elements, which are used directly and conveniently in second-order structural models jut like their elastic counterparts.
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