Yield surfaces and micro-failure mechanism of block lattice truss materials

被引：55
作者：
Fan, H. L. [1 ,2 ]
Fang, D. N. [1 ]
Jing, F. N. [3 ]
机构：
[1] Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China
[2] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
[3] PLA Univ Sci & Technol, Engn Inst Engineer Corps, Nanjing 210007, Peoples R China
来源：
MATERIALS & DESIGN | 2008年 / 29卷 / 10期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
plastic behavior; failure analysis; buckling;
D O I：
10.1016/j.matdes.2008.04.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The stiffness and the strength of block lattice truss materials were derived, as well as polyhedrical yield surfaces. Tension yield, compression yield and compression buckling of struts are the three main micro-failure mechanisms of the lattice materials. It is shown that when the relative density of the lattice is smaller than a critical value micro compression buckling of struts will dominate the macro failure mode of the material under macro shearing loading or even macro tensile loading. The lattice truss materials may be optimal designed according to their stacking mode of struts and the critical relative density. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2038 / 2042
页数：5
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