随机壁厚三维实体泡沫铝建模及压缩仿真

doi:10.13229/j.cnki.jdxbgxb20210201

Abstract

Abstract:

To solve the problems existing in geometric modeling and simulation calculation of shell aluminum foam model， based on the theory of Voronoi model， the modeling method and its implementation process of 3D solid aluminum foam model with random cell wall thickness are put forward. The model of solid aluminum foam is established by using ABAQUS foam aluminum modeling plug-in program written in Python language， and the quasi-static compression finite element simulation analysis of aluminum foam is carried out. The mechanical behavior， deformation mode and the calculated stress-strain curve of solid model and shell model in simulation are compared and analyzed. The results show that the simulation results and the deformation mode of the solid model are closer to the experiment， the stress-strain curve of the solid model is smoother and it has smaller fluctuations， the solid model is more reasonable than the model of the shell model in the compression process.

Key words: metallic material, closed-cell aluminum foam, Voronoi model, random cell wall thickness, solid model, quasi-static compression

CLC Number:

TG146.21

Wei-min ZHUANG,En-ming WANG. Modeling and compression simulation of 3D solid aluminum foam with random cell wall thickness[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(8): 1777-1785.

Figures/Tables 14

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壁厚/mm	壳体模型计算孔隙率/%	真实孔隙率/%	误差/%	相对误差/%
0.1	90.6	90.8	0.2	0.2
0.2	83.1	84.0	0.9	1.1
0.3	74.7	76.7	2.0	2.6
0.4	66.4	69.7	3.3	4.7
0.5	58.0	63.7	5.7	9.0

模型序号	孔隙率/%	胞孔数量/个	壁厚/mm
0.1-shell	90.6	300	0.1
0.1-solid	90.8	300	0.1
0.2-shell	83.1	300	0.2
0.2-solid	84.0	300	0.2
0.3-shell	74.7	300	0.3
0.3-solid	76.7	300	0.3

Modeling and compression simulation of 3D solid aluminum foam with random cell wall thickness

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