相对密度对多孔材料等效弹性性能的影响  

Influence of Relative Density on Equivalent Elastic Properties of Porous Material

作　　者：李盛静 晋艳娟[1] 杨昆[1] 张柱[1] 郑亚东[1] 

机构地区：[1]太原科技大学应用科学学院,山西太原030024

出　　处：《机械工程与自动化》2016年第2期138-139,共2页Mechanical Engineering & Automation

基　　金：山西省高等学校大学生创新创业训练项目(2014261);太原科技大学大学生创新创业训练项目(xj2014019)

摘　　要：借助二维均匀化方法来讨论胞孔形状及大小对多孔材料弹性性能的影响。基于均匀化方法预测多孔材料的等效弹性常数,并与实验结果进行比较,验证了均匀化方法预测多孔结构有效弹性模量的正确性。研究胞孔形状及相对密度对多孔材料弹性常数的影响规律,结果表明:相对密度的变化对多孔材料的等效弹性模量具有显著影响,而胞孔形状的改变对其影响则小。Two-dimensional homogenization method is applied to study the effects of the cell shape and size on the equivalent elastic property of porous material.Firstly,based on the homogenization method,the equivalent elastic constants of porous material are predicted.Comparing with calculation result by experiment method,verify that it is feasible to predict the elastic modulus of porous structures with homogenization method.Secondly,the influence law of the cell shape and relative density on elastic constants of porous material is studied.The results show that the change of relative density has significant effect on the equivalent elastic properties of porous material,and the influence of cell shape change is very small.

关 键 词：均匀化方法 相对密度 多孔材料 弹性模量 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] TB383[自动化与计算机技术—计算机科学与技术]