Dynamic stability of a rotating sandwich beam with magnetorheological elastomer core

Nayak, Biswajit; Dwivedy, Santosha K.; Murthy, K.S.R.K.

doi:10.1016/j.euromechsol.2014.03.004

Cited by 77 publications

(33 citation statements)

References 36 publications

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“…Since the moving velocity of the beam does not exceed the critical velocity, the stable/unstable region of the moving beam is not studied. The other physical parameters and material properties of the beam are set as follows: E 1 = E 3 = 72 GPa, L = 416 mm, b = 30 mm, and r = 2700 kg/m 3 , which are consistent with the parameters in Nayak et al 28 The natural frequency of the sandwich beam with h 1 = h 2 = h 3 = 1 mm under the combined effects of the axial force and magnetic field are first investigated. Then, the combined effects of the axial velocity and magnetic field are evaluated.…”

Section: Resultsmentioning

confidence: 90%

“…where dT V and dT R denote the kinetic energies due to transverse and rotational motions, respectively; dV E,e and dV E,b represent the potential energy due to extensional and bending stresses of the surface plates, respectively; dV E,P denotes the potential energy due to axial force; and dV MR,s is the potential energy due to shear stresses of the MR core. Furthermore, these terms can be expressed in the following form 28,30,31…”

Section: Model Formulation Of a Sandwich Beam With Mrf Corementioning

confidence: 99%

“…Wei et al 27 investigated the vibration characteristics of a sandwich beam with an MRF under different magnetic field intensities and different rotating speeds using the finite element theory. The dynamic stability of a rotating three-layered symmetric sandwich beam with a magnetorheological (MR) elastomer core subjected to axial periodic loads was studied by Nayak et al 28 For the PEP sandwich beam, Ozdemir and Kaya 29 investigated the extension and flapwise bending vibrations of a rotating piezolaminated composite Timoshenko beam. Numerical results were obtained to investigate the effects of the applied voltage, ply orientation, rotational speed, and hub radius on the natural frequencies and tip deflection.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic properties of an axially moving sandwich beam with magnetorheological fluid core

Wei

Sun

2017

Advances in Mechanical Engineering

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Dynamic properties and vibration suppression capabilities of an axially moving sandwich beam with a magnetorheological fluid core were investigated in this study. The stress-strain relationship for the magnetorheological fluid was described by a complex shear modulus using linear viscoelasticity theory. First, the dynamic model of an axially moving magnetorheological fluid beam was derived based on Hamilton's principle. Then, the natural frequency of the sandwich beam for the first mode was determined. Later, the effects of the speed of the axial movement, axial force, applied magnetic field, skin-core thickness ratio, and their combination on the dynamic properties of the sandwich beam with a magnetorheological fluid core were investigated. It was found that these parameters have significant effects on the dynamic properties of the sandwich beam. Moreover, the results indicate that the active control ability of magnetic field has been influenced by the axial force, moving speed, and increasing skin-core thickness ratio.

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Section: Resultsmentioning

confidence: 90%

Section: Model Formulation Of a Sandwich Beam With Mrf Corementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamic properties of an axially moving sandwich beam with magnetorheological fluid core

Wei

Sun

2017

Advances in Mechanical Engineering

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“…Composite materials are used on the day of today in all areas and especially in high technology. Materials for which rheological properties can be controlled by the application of a magnetic field are called magnetorheological materials (MR) [1][2][3]. They belong to the class, more widely defined, active materials since they can respond to changes in their environment, changes brought here by semiconductors and appropriate control algorithms.…”

Section: Introductionmentioning

confidence: 99%

Study and Analysis of the Magneto-Mechanical Behavior of Smart Composite Sandwich Beam in Elastomer

Settet¹,

Aguib²,

Nour³

et al. 2019

mech

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The purpose of this work is to analyze the nonlinear magneto-mechanical behavior of sandwich structures with a magnetorheological elastomer (MRE) core subjected to a permanent magnetic field. A detailed study is first carried out to characterize the mechanical behavior of these structures. The tests were carried out in three-point bending on beams of these complex materials for several distances between supports. An experimental study of the static response, is realized using a Zwick 2.5kN machine, allows to measure displacements as a function of force. The results deduced from the numerical simulation by the Abaqus software are compared with those obtained from the theoretical analysis. This study made it possible to show that these structures exhibit a non-linear behavior even at small deformations due to the rheological parameters which are more sensitive by the application of a magnetic field.

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“…Materials for which rheological properties can be controlled by the application of a magnetic field are called magnetorheological materials (MR) [5][6][7]. They belong to the class, more widely defined, active materials since they can respond to changes in their environment, changes brought here by semiconductors and appropriate control algorithms.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental analysis of magneto-mechanical behavior of anti-seismic active sandwich structure

Zerrouni¹,

Aguib²,

Grine³

et al. 2019

J. vibroeng.

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This work focuses on the quasi-static behavior study for simply supported sandwich beams with aluminum faces and magnetorheological elastomer core subjected to three points bending subjected to a magneto-mechanical loading by numerical and experimental investigations. The mechanical properties of the magnetorheological elastomer core are measured experimentally and the mechanical behavior of the MRE was identified by the generalized Maxwell rheological model. Depending upon the adjustable properties of the beam, energy dissipation is by core shear. A systematic series of experiments and finite elements simulations have been performed in order to assess the static behavior of the beam. The results obtained show a significant influence of the magnetic field intensity on the flexural displacement of the beam.

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Dynamic stability of a rotating sandwich beam with magnetorheological elastomer core

Cited by 77 publications

References 36 publications

Dynamic properties of an axially moving sandwich beam with magnetorheological fluid core

Dynamic properties of an axially moving sandwich beam with magnetorheological fluid core

Study and Analysis of the Magneto-Mechanical Behavior of Smart Composite Sandwich Beam in Elastomer

Numerical simulation and experimental analysis of magneto-mechanical behavior of anti-seismic active sandwich structure

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