Journal ArticleDOI
Transient Response of Sandwich Beams with Electrorheological Core
TLDR
In this article, the authors investigated the transient response of a three-layer sandwich beam with an electrorheological core and developed a finite element model of the structure and a direct integration algorithm was used to simulate the impulse response of the proposed sandwich beam.Abstract:
The present work investigates the transient response of a three-layer sandwich beam with an electrorheological (ER) core. Electrorheological fluids are a class of smart materials, which exhibit reversible changes in mechanical properties when subjected to an electric field. As applying an electric field to the core layer changes the dynamic characteristics of the structure, the ER layer can be used for suppressing the vibrations and reducing the settling time of the beam. A finite element model of the structure is developed and a direct integration algorithm is used to simulate the impulse response of the proposed sandwich beam. The core is modeled as a Bingham plastic material and effects of changes in the applied electric field on the structure settling time and its natural frequencies are represented for several thickness ratios. The variations of damping force vector, due to the dependence of the ER fluid shear stress, to the sign of shear rate, are considered in each iteration. The ER layer thickness...read more
Citations
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Journal ArticleDOI
Dynamic characteristics and control of magnetorheological/electrorheological sandwich structures: A state-of-the-art review
TL;DR: A comprehensive review of magnetorheological and electrorheological fluids in adaptive sandwich structures has been presented in this paper, mainly for the purpose of vibration control, where the authors focus on methods of characterizing the magnetors in the pre-yield region, magnetic/electric field-dependent phenomenological models describing the storage and loss moduli of fluids, experimental and analytical methods developed for vibration analysis of sandwich structures with magnetors.
Journal ArticleDOI
Vibration characteristics of electrorheological elastomer sandwich beams
TL;DR: In this paper, a finite element model of a cantilever sandwich beam with an electrorheological (ER) core was developed to predict the vibration responses of the proposed beam, and an experimental analysis was also conducted to illustrate and evaluate the effects of an electric field on the frequency responses and natural frequencies of the sandwich beam.
Journal ArticleDOI
Vibration Controllability of Sandwich Structures with Smart Materials of Electrorheological Fluids and Magnetorheological Materials: A Review
TL;DR: In this paper, a semi-active method for vibration control of flexible structures using smart materials of electrorheological fluids, magnetorheological fluid and elastomers is presented.
Journal ArticleDOI
Forced vibration of a shear thickening fluid sandwich beam
TL;DR: In this paper, the forced vibration of a sandwich beam integrating a shear thickening fluid (STF) core and with conductive skins subjected to a periodic excitation was investigated theoretically.
Journal ArticleDOI
Dynamic stability of smart sandwich beams with electro-rheological core resting on elastic foundation:
TL;DR: In this paper, the dynamic stability of smart sandwich beams resting on Winkler elastic foundation subjected to harmonic axial loads is investigated, where the authors focus on the dynamic buckling load and the stability of the smart sandwich beam.
References
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Journal ArticleDOI
Viscoelastic Properties of Magneto- and Electro-Rheological Fluids
TL;DR: In this article, the transition area between elastic and viscous behavior for a conventional ER fluid and a state-of-the-art magneto-rheological (MR) fluid through the use of oscillatory rheometry techniques is examined.
Journal ArticleDOI
Review : Material Aspects of Electrorheological Systems
TL;DR: A summary of the current state of electrorheological (ER) material research and development can be found in this paper, where a description of the electorheological effect, a defini cation of obse...
Journal ArticleDOI
Brakes and clutches using ER fluids
TL;DR: In this article, an experimental investigation of a multiple disk electro-rheological viscous device, that can for experimental purposes be used as both brake and clutches, is presented; the device used has 10 pairs of rotating and stationary (or rotated) disks with 1 mm disk spacing.
Journal ArticleDOI
On the Phenomenological Modeling of Electrorheological and Magnetorheological Fluid Preyield Behavior
TL;DR: In this article, a constitutive model for electrorheological and magneto-rheological fluids and devices is presented for the representation of the predator-prey regime.
Journal ArticleDOI
Dynamic stability of a sandwich beam with a constrained layer and electrorheological fluid core
TL;DR: In this article, the dynamic stability problem of a sandwich beam with a constrained layer and an electrorheological fluid core subjected to an axial dynamic force was studied. And the effect of the electorheological core on the dynamic instability of the sandwich beam was investigated.
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