Test and analysis of the compressive elastic modulus of the magnetorheological elastomers prepared by the field

GAO Chunfu, SHI Lingyu, ZHANG Guang, HE Xinsheng, GAN Jianfeng, PAN Shihe

(Institute of Machinery and Measurement-control Technology, Zhejiang Normal University, Jinhua 321004, China)

Abstract: Aiming at the problem of the change of the elastic modulus of the magneto rheological elastomer with the magnetic field, magnetorheological elastomers was prepared in the present of a magnetic field, ratio of the material are hydroxyl iron powder is 108 g, silicone rubber is 28 g and the silicone oil is 18 g. The mathematical analysis model was established in the direction of magnetic field with magnetorheological elastomer particles chain compression direction parallel and vertical respectively in the case of compressive strain ε=2.6%. Theoretical of the compressive elastic modulus of magnetorheological elastomers and by confirming the accuracy of theoretical analysis. The results indicate that under the condition of the loading direction of the magnetic field with magnetorheological elastomers internal partcles chain compression parallel, the magnetic force increases nonlinear in the material with the increase of the magnetic induction intensity. Under the condition of the loading direction of the magnetic field with magnetorheological elastomers internal partcles chain compression vertical, the magnetic force decreases nonlinear in the material with the increase of the magnetic induction intensity.

Key words: magnetorheological elastomers; particle chain; compressed modulus of elasticity; magnetic compression force