A novel 3D geometrical reconstruction method for aluminum foams and FEM modeling of the material response

被引：9
作者：
Zhu, Xiaolei [1 ]
Ai, Shigang [2 ]
Lu, Xiaofeng [3 ]
Zhu, Lingxue [4 ]
Liu, Bin [1 ]
机构：
[1] Tsinghua Univ, Dept Engn Mech, AML, Beijing 100084, Peoples R China
[2] Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China
[3] Nanjing Univ Technol, Dept Mech Engn, Nanjing 211816, Jiangsu, Peoples R China
[4] Jinling Inst Technol, Dept Math, Nanjing 211169, Jiangsu, Peoples R China
来源：
THEORETICAL AND APPLIED MECHANICS LETTERS | 2014年 / 4卷 / 02期
关键词：
aluminum foam; reconstruction geometrical; compression; X-ray computed tomography;
D O I：
10.1063/2.1402106
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A novel method for modeling cellular materials is proposed based on MATLAB image processing and synchrotron X-ray computed tomography scanning to obtain an accurate calculation result of aluminum foam based on finite element model. The maximum entropy algorithm is employed to obtain the binarization image, and the median filtering algorithm is used to reduce the noise after binarization. The external contour and internal pores boundary is extracted by the "edge" function in MATLAB, and the geometrical model is reconstructed. A two-step mesh algorithm is adopted to mesh the reconstructed geometrical model. Accordingly, the finite element model of aluminum foam is established by the proposed method based on reconstruction geometrical model. The compression behavior of aluminum foam is obtained at 25 degrees C, 100 degrees C, 200 degrees C by ABAQUS, and good agreements with experiments are achieved by applying the present reconstruction algorithm and modeling method. (C) 2014 The Chinese Society of Theoretical and Applied Mechanics.
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页数：8
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