Abstract
In this paper, a compound low-frequency vibration isolator is designed. The vibration isolator combines magneto rheological (MR) inerter with shape memory alloy (SMA) spring to achieve low-frequency vibration isolation effect. The MR inerter can change values of inertance and damping by regulating the magnetic field strength and flow area, while the SMA spring can reduce the dynamic stiffness of the system via its superelasticity. The theoretical model of vibration isolator is established. The influence of different parameters on the vibration isolation performance is simulated and the force transfer ratio is calculated. The results show that the isolator with intelligent materials can effectively isolate low-frequency vibration.
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