VALIDATION OF A CELLULAR MICROMECHANICAL MODEL

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.

关键词： honeycomb core heterogeneity plane stress constitutive equation Bernoulli beam

作者: A.Karako J.Freund

作者单位: Aalto University School of Science and Technology,Finland

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 262-265

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）