【摘要】 利用摄动展开方法,研究了由圆柱形带涂层杂质随机嵌入基质所形成的非线性复合介质在外加的带有不同频率和振幅的混合电场E0+E1sinωt+E3sin3ωt作用下有效的直流-交流电响应,分别推导了复合介质在杂质核、涂层及基质区域的电势分布,并在低杂质浓度下给出了复合介质有效的非线性响应及它们之间的关系.更多还原

【Abstract】 By using the perturbation method,an effective nonlinear direct current(DC) and alternating current(AC) response of nonlinear composites with cylindrical coated inclusions randomly embedded in a host medium is studied under the action of an external electric field Ea = E0 + E1 sin ωt + E3 sin 3ωt with different amplitudes and frequencies.The local potentials of composite at all harmonics are given in the inclusion core,the coated layer and the host regions.All effective nonlinear responses of composites and the relationship between the effective nonlinear responses at all harmonics are also deduced for the cylindrical coated inclusions in a dilute limit.更多还原