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Vibration and damping studies on a hollow sandwich box column with a viscoelastic/electrorheological/magnetorheological fluid core layer by the finite element method

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TLDR
In this paper, the vibration and damping of a hollow sandwich box column containing a viscoelastic layer (VEL) or an electrorheological (ER) or magnetorheological fluid core with a constraining layer are analyzed and a comparison of performance is made.
Abstract
In this paper, the vibration and damping of a hollow sandwich box column containing a viscoelastic layer (VEL) or an electrorheological (ER) or magnetorheological (MR) fluid core with a constraining layer are analyzed and a comparison of performance is made. The hollow sandwich box column comprises two skin plates and a VEL/ER/MR fluid core layer. The finite element method is used to study the vibration and damping behaviors of the column. The natural frequencies and modal loss factors are obtained by solving the complex eigenvalue problem. The modal dampings and natural frequencies of the column are calculated for various electric as well as magnetic fields and their performance is compared with that of the viscoelastic core layer for the clamped-free boundary condition. Effects of core thickness, electric voltage and magnetic field on the vibration behavior of the sandwich box column are investigated.

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Citations
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Journal ArticleDOI

A review of vibration control methods for marine offshore structures

TL;DR: A review of vibration control techniques and their application for marine offshore structures is presented in this article, where the general trend is progressing towards semi-active and hybrid vibration control from passive or active control, as they provide more practical approaches for implementation.
Journal ArticleDOI

Aeroelastic characteristics of magneto-rheological fluid sandwich beams in supersonic airflow

TL;DR: In this article, a three-layered sandwich beam with an adaptive magneto-rheological fluid (MRF) core layer is investigated, and the authors derived the instability bounds based on the classical beam theory for the face layers, magnetic field dependent complex modulus approach for viscoelastic material model and the linear first-order piston theory for aerodynamic pressure.
Journal ArticleDOI

Vibration and damping of composite sandwich box column with viscoelastic/electrorheological fluid core and performance comparison

TL;DR: In this paper, a finite element based modal strain energy method is used for predicting the modal loss factor and frequency of laminated composite box columns with integral viscoelastic/ER fluid layers.
Journal ArticleDOI

Supersonic flutter control of an electrorheological fluid-based smart circular cylindrical shell

TL;DR: In this paper, an active flutter suppression of a simply supported circular sandwich cylindrical shell with a tunable electrorheological fluid (ERF) core, under axial supersonic gas flow, is studied.
Journal ArticleDOI

Flutter suppression of an elastically supported plate with electro-rheological fluid core under yawed supersonic flows

TL;DR: In this article, the authors investigated the active control of the supersonic flutter motion of an elastically supported rectangular sandwich plate, which has a tunable electrorheological (ER) fluid core and rests on a Winkler-Pasternak elastic foundation, subjected to an arbitrary flow of various yaw angles.
References
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Journal ArticleDOI

Finite Element Prediction of Damping in Structures with Constrained Viscoelastic Layers

TL;DR: In this article, an efficient method for finite element modeling of three-layer laminates containing a viscoelastic layer is described, and modal damping ratios are estimated from undamped normal mode results by means of the modal strain energy method.
Journal ArticleDOI

Magnetorheological and electrorheological materials in adaptive structures and their performance comparison

TL;DR: In this paper, a detailed analysis of vibration control capabilities of adaptive structures based on magnetorheological and electrorheological (ER) materials is presented. And the relative performances of both MR and ER adaptive beams are discussed in detail and their advantages and disadvantages are listed.
Journal ArticleDOI

Vibration suppression capabilities of magnetorheological materials based adaptive structures

TL;DR: In this paper, the authors investigated the vibration suppression capabilities of magnetorheological (MR) materials in adaptive structures by varying the externally applied magnetic field level over the MR layer, the stiffness and damping properties of the adaptive beam can be varied.
Journal ArticleDOI

Electrorheological Material Based Adaptive Beams Subjected to Various Boundary Conditions

TL;DR: In this paper, a dynamic model of the beam structure based on thin plate theory was developed to predict the structural vibration characteristics of the ER adaptive beam, which included natural frequencies, loss factors, and transverse vibration responses at any location on the beam surface.
Journal ArticleDOI

Finite element analysis of sandwich plates: An overview

TL;DR: Many finite element models have been proposed for the analysis of sandwich plates as mentioned in this paper, and these models can be classified into two broad streams: the assumed displacement approach and the assumed-stress hybrid approach.
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