This study presents the dynamic numerical model of magneto-rheological elastomers (MREs) along with the dynamic testing of the material under various loading conditions. Primarily the loading in shear mode is considered in this study because many civil engineering structures are subjected to shear loading. Experimental tests were carried out in order to characterize the dynamic behavior of MREs. A test setup was designed and fabricated to load the MRE samples in shear mode with varying magnetic fields. A series of shear tests of MRE samples were performed under various magnetic field values, amplitudes and frequencies of loading. The test results show that the material stiffness is increased with increasing magnetic field and loading frequency within the ranges of the magnetic field and exciting frequency considered in this work. Based on the experimental results, a dynamic model was developed to capture the dynamic behavior of the MRE.

Volume Subject Area:
Modeling, Simulation and Control
Topics:
Dynamic testing (Engineering), Dynamic testing (Materials), Elastomers, Modeling, Rheology, Magnetic fields, Shear (Mechanics), Computer simulation, Dynamic models, Stiffness, Stress, Structures
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Copyright © 2009
 by ASME
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