Improving the Dynamic Properties of MRE under Cyclic Loading by Incorporating Silicon Carbide Nanoparticles

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• 作者：Yu Wang ; Xinglong Gong ; Jie Yang ; Shouhu Xuan
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：February 26, 2014
• 年：2014
• 卷：53
• 期：8
• 页码：3065-3072
• 全文大小：550K
• 年卷期：v.53,no.8(February 26, 2014)
• ISSN：1520-5045

文摘

A novel method was developed to enhance the cyclic performance of magnetorheological elastomers (MREs) by incorporating silicon carbide (SiC) nanoparticles. Different amounts of SiC nanoparticles were doped into the MREs, and their dynamic properties were investigated. In comparison to the neat MREs, the duration performance of SiC doped MRE was obviously improved. After the same cyclic loading, the maximum storage modulus and the magneto-induced storage modulus of the 4 wt % SiC-doped-MRE were approximately 1.1 and 1.3 times larger than the nondoped MREs. The maximum storage modulus, the magneto-induced storage modulus, and the MR effect in MRE-4 were approximately 1.73, 2.10, and 1.65 times that in MRE-0, respectively, after the cyclic load of different strain amplitudes. The improving mechanism was studied, and it was found that incorporating SiC nanoparticles can affect the stress distribution surrounding the magnetized carbonyl iron (CI) particles in the prestructure process and, thus, can affect the microstructures of the MREs.