电流变液的频率响应

电流变液的频率响应 FREQUENCY RESPONSIVENESS OF ELECTRORHEOLOGICAL FLUIDS 谭志杰 Tan Zhijie 1 2 3 first-author 邹宪武 Zou Xianwu 1 2 3 任大志 Ren Dazhi 1 2 3 金准智 Jin Zhunzhi 1 2 3 水嘉鹏 1 2 3 武汉大学物理学系,武汉 武汉大学物理学系,武汉 Department of Physics, Wuhan University, Wuhan 430072,China)Shut Jiapeng Department of Physics, Wuhan University, Wuhan 430072,China)Shut Jiapeng ,230031 ,230031 中国科学院固体物理研究所,合肥 中国科学院固体物理研究所,合肥 用理论分析和动力学方法，研究了由无膜粒子和有膜粒子分别与绝缘油组成电流变液的介电弛豫，发现某些电流变材料具有强烈的频率依赖性，得到了随频率变化的固一液转变的临界转变频率和转变频率宽度，讨论了给粒子加膜对电流变效应的影响和水的活化作用．同时，进行了动力学模拟，结果与理论分析相吻合． Using the theoretic analysis and the dynamics method, the dielectric relaxation of electrorheological fluids（ERF） consisting of particles with and without surface film were studied. Some electrorheologiclmaterials were found to have great dependence on the frequency of external electricity. The critical frequency ofthe liquid--solid transition and the width of the transitive frequency were obtained. The influence of the particleswith surface film on electrorheological fluids and the role of water were discussed. The dynamic simulation wasperformed, and the results agree with those of theoretic analysis. 电流变液 频率特性 活化 electrorheological fluids frequency dependence activate O37 国家自然科学基金(61672102);教育部重点科学技术项目 1998-05-01 2021-04-01 5