Comparisons of compression characteristics in compression forming of porous cylinder based on slab method and finite element method under constant shear friction

The study assumes constant shear friction to perform mechanics analysis and comparisons of compression characteristics in compression forming of porous cylinder based on slab method and finite element method. The vertical stress ( p ), radial stress ( q ), compression force ( P ), average radius, and density after forming can be systematically explored. Because the volume in forming of porous cylinder cannot keep constant, just only keep the mass constancy. Therefore, the derivation is more complicated. The mechanics analytical model established by the slab method compares with the FEM using DEFORM-2D analysis software each other to realize the variations of both models; the maximum average error for the compressive load ( P ) under various reduction ratios is 14.8% between the slab method and the finite element method. The results with a good agreement are shown in the study. These models can be offered to the reference of porous cylinder compression in industries.