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
Dynamic properties of an axially moving sandwich beam with magnetorheological fluid core
TL;DR: In this article, the authors investigated the dynamic properties and vibration suppression capabilities of an axially moving sandwich beam with a magnetorheological fluid core and the stress-strain relationship.
Journal ArticleDOI
Nonlinear vibration analysis of multiscale doubly curved piezoelectric composite shell in hygrothermal environment
TL;DR: In this paper, the authors studied large amplitude vibration behaviors of multiscale composites doubly curved shells with piezoelectric layer using Reddy's third-order shear deformation theory.
Journal ArticleDOI
Free vibration and buckling analyses of cylindrical sandwich panel with magneto rheological fluid layer
TL;DR: In this article, the free vibration and buckling analysis of the cylindrical sandwich panel with magneto-rheological fluid layer for simply supported boundary conditions was performed based on an impounded magneto rheological flow model.
Journal ArticleDOI
Large amplitude vibration of viscoelastically damped multiscale composite doubly curved sandwich shell with flexible core and MR layers
Mahsa Karimiasl,Farzad Ebrahimi +1 more
TL;DR: In this paper, the nonlinear vibration of smart viscoelastic composite doubly curved sandwich shell with flexible core and magnetorheological layers with different distribution patterns is investigated.
Journal ArticleDOI
Assessment of dynamic characteristics of thin cylindrical sandwich panels with magnetorheological core
TL;DR: Based on the equivalent single-layer linear theory for laminated shells, free and forced vibrations of thin cylindrical sandwich panels with magnetorheological core are studied in this article, where five variants of av...
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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