Abstract
The electrorheological (ER) material embedded in the sandwich structure is subjected to oscillating shear as the structure is in vibration. According to this shear deformation mechanism, a testing apparatus with ER material filled in a fixture consisting of parallel plates is built in this study. With the controlled relative displacement between the parallel plates, the complex moduli, loss factor, and the dissipated energy of the ER material under oscillating shear are measured. The effects of the electric field strength, strain amplitude, and frequency on these dynamic properties are investigated. It is found that the constitutive model proposed in the previous work accurately describes the characteristics of the ER material under this loading condition.
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