Abstract
Compression behavior of a porous aluminum made by the friction stir processing was investigated through the finite element analysis. The finite element model was automatically constructed by the image-based modeling using a micro-focus X-ray CT. The voxel modeling was employed to robustly and quickly generate the finite element mesh. To examine the validity of finite element simulation, the nominal stress and nominal strain relationship was compared between the finite element analysis and the experiment. The simulation result overestimated the total stiffness and nominal stress due to mainly the inadequate approximation of contact boundary condition with the compressing plate. However, the error in plateau stress was about thirty percent, and it may be reduced by the rigorous contact analysis and the refinement of finite element mesh.
