Graded lattice structures have been paid wide attention in the engineering and biological fields due to their excellent energy absorption capacity and variable porosity characteristics. Based on the size-graded lattice structure, laser powder bed fusion is utilized to manufacture the corresponding Ti-6Al-4 V lattice samples. Then, the quasi-static compression experiment is conducted and a predictive model for its mechanical properties is established accordingly. Also, its dynamic fatigue behavior is studied, and the influence of sandblasting and gradient direction on its mechanical response is evaluated. The results show that excellent mechanical properties and energy absorption capacity is exhibited in the vertical graded (VG) structure. Compared to the uniform structure, its elastic modulus and energy absorption are increased by 17.53% and 59.43%, respectively. The compression response of the radial graded (RG) structure is similar to that of the uniform structure, with minor changes on the mechanical properties and energy absorption capacity. However, the fatigue performance of the RG structure is better than that of the VG structure. With appropriate mechanical properties and changes in pores, this graded structure can simulate the changing physical and chemical properties of natural bone. Therefore, it has great potentiality in the application of bone implants.

梯度晶格结构因其优异的能量吸收能力和可变孔隙率特性而在工程和生物领域受到广泛关注。基于尺寸分级的晶格结构，利用激光粉末床融合制造相应的Ti-6Al-4V晶格样品。然后，进行了准静态压缩实验，并据此建立了其力学性能的预测模型。此外，还研究了其动态疲劳行为，并评估了喷砂和梯度方向对其力学响应的影响。结果表明，垂直渐变（VG）结构表现出优异的机械性能和能量吸收能力。与均匀结构相比，其弹性模量和吸能增加了17.53%和59。分别为 43%。径向渐变（RG）结构的压缩响应与均匀结构的压缩响应相似，机械性能和能量吸收能力的变化很小。但RG结构的疲劳性能优于VG结构。通过适当的力学性能和孔隙的变化，这种分级结构可以模拟天然骨骼的物理和化学性质的变化。因此，它在骨植入物的应用中具有很大的潜力。通过适当的力学性能和孔隙的变化，这种分级结构可以模拟天然骨骼的物理和化学性质的变化。因此，它在骨植入物的应用中具有很大的潜力。通过适当的力学性能和孔隙的变化，这种分级结构可以模拟天然骨骼的物理和化学性质的变化。因此，它在骨植入物的应用中具有很大的潜力。