Magnetostriction and Field Stiffening of Magneto-Active Elastomers
نویسندگان
چکیده
Yi Han∗, Akshi Mohla∗, Xiao Huang†,‡, Wei Hong∗,†,¶ and Leann E. Faidley§ ∗Department of Aerospace Engineering Iowa State University, Ames, IA 50010, USA †Department of Materials Science and Engineering Iowa State University, Ames, IA 50010, USA ‡Department of Engineering Mechanics Tsinghua University, Beijing 100084, P. R. China §Department of Chemistry and Engineering Science Wartburg College, Waverly, IA 50677, USA ¶[email protected]
منابع مشابه
On the stiffening effect of magneto-rheological elastomers
Magneto-rheological elastomers (MREs), a class of polymer-based composites with dispersed magnetic filler particles, are known for their tunable stiffness. The magnetic-field-induced stiffening effect, namely the magneto-rheological (MR) effect, is often attributed to the magnetic dipolar interaction. The direct attraction between two magnetic dipoles could increase the shear modulus of the mat...
متن کاملMagnetorheological brush - a soft structure with highly tuneable stiffness.
By combining the field-stiffening effect of magnetorheological (MR) elastomers and the Euler buckling mechanism, we developed a brush-like magneto-active structure with highly tuneable stiffness. When the applied mechanical load is within a certain range, the effective stiffness of the structure can be tuned by several orders of magnitude with the applied magnetic field. The performance of the ...
متن کاملDevelopment of Film Actuator Operated by Magnetic Field for Micro-Machine
Fe-Pd alloy films, prepared by using a DC magnetron sputtering method, were developed as a high sensitive actuator, which was driven by the magnetic field. Fe-Pd alloy film shows large magnetostriction and high magnetostrictive susceptibility under 1 kOe. To evaluate the moving potential as magneto-driving actuator, the magnetostrictive properties were measured under different tensile loading s...
متن کاملEnergy conversion in magneto-rheological elastomers
Magneto-rheological (MR) elastomers contain micro-/nano-sized ferromagnetic particles dispersed in a soft elastomer matrix, and their rheological properties (storage and loss moduli) exhibit a significant dependence on the application of a magnetic field (namely MR effect). Conversely, it is reported in this work that this multiphysics coupling is associated with an inverse effect (i.e. the dep...
متن کاملLarge-strain behaviour of Magneto-Rheological Elastomers tested under uniaxial compression and tension, and pure shear deformations
The large-strain behaviour of Magneto-Rheological Elastomers (MREs) is characterised experimentally under uniaxial compression, uniaxial tension and pure shear deformation both in the absence and in the presence of magnetic fields. MREs are ‘’smart’ materials that can alter their properties instantaneously by the application of external stimuli. They hold great potential for use in adaptive sti...
متن کامل