Influence of cell wall thickness variations on elastic stiffness of closed-cell cellular solids

被引：101

作者：

Grenestedt, JL ^{[1
]}

Bassinet, F ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Aeronaut, Div Lightweight Struct, S-10044 Stockholm, Sweden

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2000年 / 42卷 / 07期

关键词：

cellular solid; micro structure; constitutive behavior; modeling; imperfections;

D O I：

10.1016/S0020-7403(99)00054-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The stiffness of closed-cell low-density cellular solids, or solid foams, is affected by "imperfections" such as non-uniform cell shape and size, wavy distortions of cell walls, variations in cell wall thickness, etc. The present paper focuses on the influence of non-uniform cell wall thickness on stiffness. Calculations are performed on one model with different degrees of thickness variations. The model used is the flat-faced Kelvin structure, which consists of 14-sided polyhedra in a bcc arrangement. The results indicate that the stiffness of closed-cell cellular solids is not very sensitive to thickness variations. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1327 / 1338

页数：12

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