Journal ArticleDOI
Model of magnetorheological elastomers
TLDR
In this paper, the authors used finite element analysis to show that the shear modulus of typical elastomers is about 50% of the zero-field modulus at saturation and the optimum particle volume fraction for the largest fractional change in modulus is predicted to be 27%.Abstract:
Magnetorheological elastomers consist of natural or synthetic rubber filled with micron-sized magnetizable particles. During curing of the elastomer, an applied magnetic field aligns the particles into chains. The shear modulus of the resulting cured material is sensitive to magnetic fields of several kOe magnitude. Such sensitivity to magnetic field makes these materials attractive for applications in automotive mounting components. At large fields (magnetic induction B>1 T), the Fe particles are completely magnetized or saturated. Calculations using finite element analysis show that for typical elastomers the increase in shear modulus due to interparticle magnetic forces at saturation is about 50% of the zero-field modulus. The optimum particle volume fraction for the largest fractional change in modulus at saturation is predicted to be 27%. Calculations of the zero-field shear modulus perpendicular to the chain axis indicate that it does not exceed the modulus of a filled elastomer with randomly disper...read more
Citations
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Journal ArticleDOI
Magnetic stimuli-response properties of polyurethane-based magnetorheological soluble gel
Journal ArticleDOI
Influence of chain-like cobalt particles on the properties of magnetorheological elastomers
TL;DR: In this paper , the effects of different chain-like microstructures on the performance of magnetorheological elastomers (MREs) were compared and a relationship curve between the MR effect and the adjacent particles' distance was proposed.
Journal ArticleDOI
Determination of representative volume element size for a magnetorheological elastomer
TL;DR: In this paper , the authors used the finite element method and a statistical analysis based on the coefficient of variation to determine the RVE size of magnetorheological elastomers (MREs).
Journal ArticleDOI
A new magnetic-responsive hybrid soft composite with tunable equivalent tensile modulus: A proof-of-concept
TL;DR: In this paper, a hybrid soft composite with magnetically tunable equivalent tensile modulus (CETM) is presented, where a change of up to 300% can be achieved in the CETM by applying a 0.3 T magnetic field using permanent magnets.
Journal ArticleDOI
Evaluation of elastomeric models for engine mountings applications
TL;DR: In this article, the authors compared the use of a three-parameter classic model and a four-parallel model on the isolation performance of elastomers and the results showed higher vibration isolation effects using the fourparameter model.
References
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Journal ArticleDOI
Theory of Filler Reinforcement
TL;DR: In this article, the authors generalized the model for ellipsoidal (including plate-and rod-like) filler particles and extended it to the computation of various properties in terms of the properties of the matrix and of the fillers.
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A model of the behaviour of magnetorheological materials
TL;DR: In this paper, a quasi-static, one-dimensional model is developed that examines the mechanical and magnetic properties of magnetorheological materials, and the model attempts to account for magnetic nonlinearities and saturation by establishing a mechanism by which magnetic flux density is distributed within the composite material.
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Encyclopedia of Applied Physics
TL;DR: The 23-volume "Encyclopedia of Applied Physics" seeks to demonstrate the synergy between physics and technological applications as discussed by the authors, and provides a broad overview of the main aspects of physics and their applications.
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Commercial magneto-rheological fluid devices
TL;DR: Controllable magnetorheological (MR) fluid devices have reached the stage where they are in commercial production as discussed by the authors, and such devices are finding application in a variety of real world situations ranging...
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The Magnetoviscoelastic Response of Elastomer Composites Consisting of Ferrous Particles Embedded in a Polymer Matrix
TL;DR: In this paper, a quasi-static dipole model is presented to examine the magnetoviscoelastic effect of these elastomer composites and the model is semi-empirical in that it may be fit to experimental data over a broad range of applied magnetic fields.