Journal ArticleDOI
Vibration analysis of a multi-layer beam containing magnetorheological fluid
TLDR
In this paper, the authors investigated the properties of a multi-layered beam with MR fluid as a sandwich layer between the two layers of the continuous elastic structure and formulated the governing equations of a multilayer MR beam in the finite element form and using the Ritz method.Abstract:
Magnetorheological (MR) materials exhibit rapid variations in their rheological properties when subjected to varying magnetic field and thus offer superior potential for applications in smart structures requiring high bandwidth. MR sandwich structures can apply distributed control force to yield variations in stiffness and damping properties of the structure in response to the intensity of the applied magnetic field and could thus provide vibration suppression over a broad range of external excitation frequencies. This study investigates the properties of a multi-layered beam with MR fluid as a sandwich layer between the two layers of the continuous elastic structure. The governing equations of a multi-layer MR beam are formulated in the finite element form and using the Ritz method. A free oscillation experiment is performed to estimate the relationship between the magnetic field and the complex shear modulus of the MR materials in the pre-yield regime. The validity of the finite element and Ritz formulations developed is examined by comparing the results from the two models with those from the experimental investigation. Various parametric studies have been performed in terms of variations of the natural frequencies and loss factor as functions of the applied magnetic field and thickness of the MR fluid layer for various boundary conditions. The forced vibration responses of the MR sandwich beam are also evaluated under harmonic force excitation. The results illustrate that the natural frequencies could be increased by increasing the magnetic field while the magnitudes of the peak deflections could be considerably decreased, which demonstrates the vibration suppression capability of the MR sandwich beam.read more
Citations
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Journal ArticleDOI
Supersonic flutter analysis of annular/circular sandwich panels containing magnetorheological fluid:
TL;DR: In this paper, the authors investigated the effect of magnetorheological fluids on the aeroelastic stability and flutter boundaries of the circular/annular magnetic sandwich plates.
Journal ArticleDOI
Post-yield characteristics of magnetorheological fluids; from modelling to large-amplitude vibration analysis of sandwich plates using nonlinear finite element method
TL;DR: In this paper, a post-yield characterization of magnetorheological (MR) fluid and development of a phenomenological model representing the linearized equivalent storage and loss moduli of the fluid in the nonlinear region were investigated.
Free vibration and static bending analysis of curved sandwich panel with magneto-rheological fluid layer in sheets using improved high order sandwich panel theory
TL;DR: This document is intended to help clarify the role that language plays in the development of e-sportsmanship and the sport in general.
Journal ArticleDOI
Segment optimization of a rotating multilayer sandwich beam
TL;DR: In this paper, the optimal distribution of cuts or segments in both the constrained and constraining layers of a rotating sandwich beam is presented, and the governing equations of motion of the rotating constra...
Journal ArticleDOI
Recent developments in semi-active control of magnetorheological materials-based sandwich structures: A review:
TL;DR: Magnetorheological (MR) materials are kinds of smart materials whose rheological characteristics are controllable with the application of external magnetic fields as discussed by the authors, and they have been used in many applications.
References
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Journal ArticleDOI
State of the art of structural control
TL;DR: In this paper, the authors review the recent and rapid developments in semi-active structural control and its implementation in full-scale structures, and present an alternative to active and hybrid control for structural vibration reduction.
Journal ArticleDOI
The forced vibration of a three-layer, damped sandwich beam with arbitrary boundary conditions
D.J. Mead,Š. Markuš +1 more
TL;DR: In this article, the transverse displacement of a three-layer sandwich beam with a viscoelastic core is derived in terms of the transversal displacement, w, for a 3D beam.
Journal ArticleDOI
An experimental study of MR dampers for seismic protection
TL;DR: In this paper, the performance of magnetorheological dampers for seismic response reduction is examined and the results indicate that the MR damper is quite effective for structural response reduction over a wide class of seismic excitations.
Journal ArticleDOI
Theory of Vibratory Bending for Elastic and Viscoelastic Layered Finite-Length Beams
Journal ArticleDOI
MR damper and its application for semi-active control of vehicle suspension system
TL;DR: In this article, a semi-active control of vehicle suspension system with magnetorheological (MR) damper is presented and performance testing is done for this damper with INSTRON machine.
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