EFFECTIVE-MEDIUM THEORY FOR STRONGLY NONLINEAR COMPOSITES - FRACTAL CLUSTERS

被引：4

作者：

CHOY, TS

YU, KW

机构：

[1] Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories

来源：

PHYSICS LETTERS A | 1995年 / 202卷 / 01期

关键词：

D O I：

10.1016/0375-9601(95)00310-Y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have developed an effective medium approximation (EMA) for the effective nonlinear response due to clustering of a strongly nonlinear conducting material with a current-field (J-E) response of the form J = chi\E\(2 beta)E (beta > 0) in a host medium, where chi is the nonlinear coefficient. A cluster energy functional is constructed and a variational principle is invoked to obtain an expression for the effective nonlinear response of a fractal cluster. The EMA results are compared with numerical calculations in a deterministic fractal model and excellent agreement is found.

引用

页码：129 / 132

页数：4

共 17 条

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