Effects of Strain Rate and Porosity on the Compressive Behavior of Porous Titanium with Regular Pores

Using a material testing machine and the split Hopkinson pressure bar (SHPB) system, we investigated the quasi-static and dynamic compressive behaviors of porous titanium with regular pores, and studied the effects of the strain rate and porosity on the Young's modulus, yield strength and energy absorption of the porous titanium.The experimental results show that the stress-strain curves of the porous titanium can be approximately described by a bi-liner model in a specific range, and the porosity directly affects the Young's modulus, while the yield strength and energy absorption of the porous titanium vary with the stain rate.An empirical relation of the yield strength of the porous titanium was developed using these findings.