Structural Modeling in the Mechanics of Porous Materials

被引：0
|
作者：
Yu. M. Pleskachevskii
S. V. Shil'ko
D. A. Chernous
机构：
[1] Belyi Metal-Polymer Research Institute,
[2] Belarus National Academy of Sciences,undefined
来源：
Mechanics of Composite Materials | 2003年 / 39卷
关键词：
porous material; strut models; structural unit; effective elastic properties; nonlinear viscoelastic behavior;
D O I：
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学科分类号：
摘要：
A new method for analyzing the deformation behavior of rigid and elastic foams with a small volume content of solid phase (ϕ < 0.2) is developed. Various structural models for describing the elastic behavior of rigid and elastic plastic foams are used and compared. The results of structural simulation of anisotropic auxetic (i.e., having a negative Poisson ratio) foams with concave cells are presented. For cyclic uniaxial compression of rigid foams and volumetric deformation of elastic foams, the stress-strain curves are obtained. The general shape of the curves agrees well with the nonlinearly elastic behavior of plastic foams observed in experiments.
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页码：129 / 136
页数：7
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