Abstract:Two kinds of BCC and BCC-Z Titanium alloy porous structures were manufactured by selective laser melting, and its feasibility of forming complex porous structures was verified. Then, static compression tests were carried out and the results show that the products always fracture around 45 °. The stress strain curve shows that the tensile strength of the porous structures is greatly reduced, and the peak stress is decreased with the increase of the ratio of length diameter and porosity. In addition, in the case of similar ratios of length diameter and porosity, the ability to bear loads of BCC-Z is significantly higher than that of BCC. Finally, the stress distribution of BCC parts in the process of compression was analyzed by finite element simulation. In view of the stress concentration at the nodes of the unit, the method of node reinforcement was put forward. And the elastic modulus and the yield strength of the porous products are predicted, which fits the experiment results.