VALIDATION OF A CELLULAR MICROMECHANICAL MODEL

被引:0
|
作者
Karako, A. [1 ]
Freund, J. [1 ]
机构
[1] Aalto Univ, Sch Sci & Technol, Helsinki, Finland
来源
ADVANCES IN HETEROGENEOUS MATERIAL MECHANICS 2011 | 2011年
关键词
honeycomb core; heterogeneity; plane stress; constitutive equation; Bernoulli beam;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Heterogeneity in cellular structures has obviously a crucial effect on strength. Considering the fact, a micromechanical model employing heterogeneous specimen geometry consisting of hexagonal cells has been generated. In order to describe the mechanical behavior of each individual cell wall, elastic Bernoulli beam model is utilized. The model uses two parameter statistics for cell wall length and thickness, i.e. mean value and standard deviation. By means of the micromechanical model, virtual experiments for plane stress state are carried out. In the meantime, physical experiments for various honeycomb cores are conducted in order to compare and validate parameters of macroscopic constitutive equation obtained through virtual experiments.
引用
收藏
页码:262 / 265
页数:4
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