中文摘要：

采用普通材料测试机和分离式霍普金森压杆（SHPB）实验装置对孔隙规则排布的多孔钛试样进行准静态及动态单轴压缩实验,研究了应变率和孔隙率对多孔钛材料弹性模量、屈服强度和能量吸收能力的影响。结果表明：在不同应变率下,规则多孔钛应力-应变曲线在特定区域均可近似为双线性模型;孔隙率对弹性模量、屈服强度和能量吸收能力有直接影响,屈服强度和能量吸收能力均与应变率相关,并给出了同时考虑孔隙率和应变率对屈服强度影响的经验公式。

英文摘要：

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.