A NEW HONEYCOMB HOLES MAGNETORHEOLOGICAL ELASTOMERS FOR VIBRATION ISOLATION

作者:Zheng Xing*; Huang Haiying
来源:23rd International Congress on Sound and Vibration (ICSV), 2016-07-10 to 2016-07-14.

摘要

Vibration isolator has been widely applied to engineering application. The properties of vibration isolation materials play an important role in the vibration control. Magnetorheological elastomers (MRE) are an intelligent magnetic material which mainly composed of micrometer-sized magnetically permeable particles in a rubber-like non-magnetic matrix material. This paper proposes a new honeycomb holes MRE which is prepared by boring holes on MRE. Each honeycomb holes are regular hexagon and uniform distribution on the MRE. The stiffness and damping of honeycomb holes MRE can be controlled by an external magnetic field. Moreover, the range of stiffness and damping changed is larger than the MRE without honeycomb holes. Thus, the transmission of vibration in the honeycomb holes MRE can be controlled effectively by controlling the external magnetic field; the natural frequency of vibration isolation system can be shifted and the response amplitude also can be decreased effectively. A mechanical model is established to analyse the vibration isolation mechanism of the honeycomb holes MRE. The results show that the MRE with appropriate honeycomb holes have excellent performance of vibration isolation. Overall, this study is expected to provide a good guide for MRE applied in vibration control.