Compression behavior of metal foams with real pore structures through CT scan images
Lei Wang1, Kai Jiang1, Dong-hui Yang1,2
1 College of Mechanics and Materials, Hohai University, Nanjing 211100, Jiangsu, China 2 Suqian Research Institute of Hohai University, Suqian 223814, Jiangsu, China
Compression behavior of metal foams with real pore structures through CT scan images
Lei Wang1, Kai Jiang1, Dong-hui Yang1,2
1 College of Mechanics and Materials, Hohai University, Nanjing 211100, Jiangsu, China 2 Suqian Research Institute of Hohai University, Suqian 223814, Jiangsu, China
摘要 Based on the real pore structure obtained from computed tomography (CT) scan images, a three-dimensional (3D) model of the metal foam sample with specified porosity is established, and the model is compressed and simulated by finite element method with the simulation results compared with the experimental test results for validation. At the same time, based on the spatial distribution characteristics of cells extracted from 3D model construction, a widely used metal foam model with Voronoi pore structure or spherical pore structure was established and simulated under compression. The two compression simulation results with regular pore structure models were also compared with the experimental results and CT model results to study the influence of cell wall morphology on the compression performance of metal foams. The simulation results show that CT model agrees well with the experimental results and is more accurate than Voronoi pore or spherical pore model, which can provide a more reasonable option for investigation of metal foams.
Abstract：Based on the real pore structure obtained from computed tomography (CT) scan images, a three-dimensional (3D) model of the metal foam sample with specified porosity is established, and the model is compressed and simulated by finite element method with the simulation results compared with the experimental test results for validation. At the same time, based on the spatial distribution characteristics of cells extracted from 3D model construction, a widely used metal foam model with Voronoi pore structure or spherical pore structure was established and simulated under compression. The two compression simulation results with regular pore structure models were also compared with the experimental results and CT model results to study the influence of cell wall morphology on the compression performance of metal foams. The simulation results show that CT model agrees well with the experimental results and is more accurate than Voronoi pore or spherical pore model, which can provide a more reasonable option for investigation of metal foams.
Lei Wang,Kai Jiang,Dong-hui Yang. Compression behavior of metal foams with real pore structures through CT scan images[J]. Journal of Iron and Steel Research International, 2022, 29(11): 1886-1897.
2022, Vol. 29 
