Industrial & Engineering Chemistry Research, Vol.51, No.8, 3322-3328, 2012
Magnetic-Field-Induced Normal Force of Magnetorheological Elastomer under Compression Status
The magnetic-field-induced normal force of magnetorheological elastomer (MRE) under compression status is studied in this paper. The influence of monotonic loading of the magnetic field, particle distribution, temperature, and cyclic loading of the magnetic field are investigated. The experimental results show that the normal force increases with increasing magnetic field and precompression force. For aligned MRE, the change of the magnetic-field-induced normal force is larger than that of isotropic MRE due to the special chainlike structure. When the temperature increases, the maximum change of the magnetic-field-induced normal force first increases and then decreases, due to the interaction of iron particles and the decreasing of the saturation magnetization of the carbonyl iron particles. lithe magnetic field is circularly applied on the MIRE, the normal force during unloading is smaller than that during loading due to the stress relaxation.