为探究磁流变弹性体的磁致摩擦性能，通过试验制备了不同质量分数的各向同性和各向异性的磁流变弹性体，搭建了摩擦试验台架并进行摩擦试验，试验结果表明：各向同性的磁流变弹性体在磁场作用下，摩擦因数随磁场增加而降低，并随着羰基铁粉质量分数增加呈非线性变化，当质量分数大约在1：1.5时，摩擦因数变化最大，减小了约25%，但对于各向异性的磁流变弹性体，磁场的施加对摩擦因数的影响具有不确定性，试验还发现这种磁流变弹性体的摩擦因数在轻载条件下随着负载的增大而减小。随后从材料表面的粗糙度、弹性模量以及正压力角度对试验现象进行解析，构建磁流变弹性体摩擦因数与弹性模量关系模型，并选取质量分数为1：3的样本试验进行验证，当磁场强度约为500 mT时，磁流变弹性体表面粗糙度减小约20.7%，磁场强度约为250 mT时，弹性模量增大约22%，与理论预测相符。
In order to explore the tribological characteristics of magnetorheological elastomers(MREs), the isotropic and anisotropic MREs are fabricated, friction test bench is built and the friction experiment is carried out. The experiment results illustrate that the isotropic MRE has a decreasing in friction coefficient with increasing of the magnetic field, and change non-linearly with particle mass content. When the mass content reaches at 1:1.5, the friction coefficient change in maximum with 25% decrease. For the anisotropic MREs, the influence of magnetic on friction coefficient did not follow the same trend as isotropic MREs. The experiment results also show that friction coefficient of MREs decreased with the increase of load for both isotropic and anisotropic MREs when the deformation is with elastic range. Then the experimental phenomena is analyzed from the roughness of the material surface, the elastic modulus and the positive pressure angle. The relational model of the friction coefficient of MRE and the elastic modulus is built. And the sample of mass fraction of 1:3 is selected to verify that when the magnetic field strength is 500 mT, surface roughness of MREs is reduced by about 20.7%, and when the magnetic field strength is 250 mT, the elastic modulus is increased by about 22%, which is matched with the theoretical predictions.
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