THE EFFECTIVE MECHANICAL-PROPERTIES OF NONLINEAR ISOTROPIC COMPOSITES
THE EFFECTIVE MECHANICAL-PROPERTIES OF NONLINEAR ISOTROPIC COMPOSITES
复制标题
DOI：
10.1016/0022-5096(91)90030-r
复制
发表时间：
1991-01-01
影响因子：
5.3
通讯作者：
CASTANEDA, PP
中科院分区：
文献类型：
--
作者：
CASTANEDA, PP
本文提出了一种新的变分结构，它根据具有相同微结构分布的线性复合材料的相应能量势，给出了非线性复合材料的有效能量势的计算公式。该处方可用于从线性复合材料的有效性能的任何界限和估计获得非线性复合材料的有效力学性能的界限和估计。该程序的主要优点是其实施的简单性，其应用的一般性和其结果的强度。将该公式应用于三种特殊的非线性复合材料：多孔材料、两相不可压缩复合材料和刚性增强材料。的结果进行了比较与以前可用的结果的特殊情况下的幂律本构行为。
A NEW variational structure is proposed that yields a prescription for the effective energy potentials of nonlinear composites in terms of the corresponding energy potentials for linear composites with the same microstructural distributions. The prescription can be used to obtain bounds and estimates for the effective mechanical properties of nonlinear composites from any bounds and estimates that may be available for the effective properties of linear composites. The main advantages of the procedure are the simplicity of its implementation, the generality of its applications and the strength of its results. The general prescription is applied to three special nonlinear composites: a porous material, a two-phase incompressible composite and a rigidly reinforced material. The results are compared with previously available results for the special case of power-law constitutive behavior.