OS1208 Elastic-Plastic Finite Element Compression Analysis Using Voxel Model of Porous Aluminum

Abstract

The energy absorptivity of porous aluminum depends on the pore structures of porous aluminum. The pore structure can be captured by the micro-focus X-ray computed tomography, and the finite element model can be also automatically generated by using the uniform cubic element. In this study, elastic-plastic finite element analysis for the fmite element model and compression test of porous aluminum were carried out. The analytical result gives a good estimation of the initial gradient of the nominal stress-strain curve obtained by the test. Moreover, it was concluded that the compressive collapse behavior was affected by the elastic-plastic property of material along with the high stress concentration from the beginning of compression load and the plateau region was realized by the fmite deformation of the cell walls.