Aiming at the problems of stress shielding and stress concentration caused by significant weight and high elastic modulus of titanium alloy(TC4)solid implants,the porous structures of hexahedral,octahedral,rhombic dodecahedron and derived dodecahedral titanium alloys were designed and analyzed.The results show that the porosity has a significant influence on the mechanical properties of the structure.The lower porosity produces more isotropic structure,making the property closer to the simulation ones.Combined with observing the fracture surface,the four kinds of structures all show approximately 45° shear failure which belongs to plastic fracture.
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