The influence of aspect ratio of voids on the effective elastic moduli of foamed metals

被引：16

作者：

Chao, LP ^{[1
]}

Huang, JH ^{[1
]}

Huang, YS ^{[1
]}

机构：

[1] Feng Chia Univ, Dept Mech Engn, Taichung 407, Taiwan

来源：

JOURNAL OF COMPOSITE MATERIALS | 1999年 / 33卷 / 21期

关键词：

D O I：

10.1177/002199839903302103

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

An analytical methodology is developed to study the influence of void's aspect ratio on the overall elastic behavior of foamed materials. The method developed for the prediction of the effective elastic moduli is based upon Eshelby's equivalent inclusion method and Mori-Tanaka theory. Analysis results with foamed aluminum as demonstration of the effectiveness of the proposed methodology indicate that the effective longitudinal elastic modulus <(E)over bar(11)>, the effective shear moduli <(G)over bar(12)> and <(G)over bar(13)>, and effective Poisson's ratio <(nu)over bar(12)> appear to increase with the increment of void's aspect ratio. Meanwhile, the effective transverse elastic moduli <(E)over bar(22)> and <(E)over bar(33)>, the effective out-plane shear modulus <(G)over bar(23)>, and the effective Poisson's ratios <(nu)over bar(21)> as well as <(nu)over bar(23)> decrease with increasing aspect ratio of the void. The numerical results correlate well with experimental data, demonstrating the accuracy of the proposed methodology with respect to predicting elastic moduli of foamed materials.

引用

页码：2002 / 2016

页数：15

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