It is vital to develop lattice structures with excellent performance in structural lightweight and multi-functional applications. However, the inherent single mechanical response of the lattice structure limits its application to different physical scenarios. In this study, to achieve the tailored mechanical properties adjustment, we propose a method for creating lattice structures with varying morphology and relative density by adjusting the geometric parameters of the lattice unit cell. A theoretical model for the preliminary prediction of mechanical properties was established, and a uniaxial quasi-static compression experiment was performed on Ti-6Al-4V lattice samples fabricated by laser powder bed fusion. Additionally, the compressive response of these lattice structures was analyzed by numerical simulation. The results show that the adjusting geometric parameters can achieve various heterogeneous mechanical responses, including shear band failure and uniform compression buckling failure. Furthermore, the mechanical properties can be realized in a larger range of compressive modulus from 77.04 MPa to 1073.5 MPa, and compressive strength from 3.96 MPa to 89.23 MPa. Therefore, the customized requirements of structural load-bearing capacity (large modulus and high strength) and energy absorption (stable platform stage) can be met.

在结构轻量化和多功能应用中开发具有优异性能的晶格结构至关重要。然而，晶格结构固有的单一机械响应限制了其在不同物理场景中的应用。在这项研究中，为了实现定制的机械性能调整，我们提出了一种通过调整晶格晶胞的几何参数来创建具有不同形态和相对密度的晶格结构的方法。建立了力学性能初步预测的理论模型，并对激光粉末床熔融制备的Ti-6Al-4V晶格样品进行了单轴准静态压缩实验。此外，通过数值模拟分析了这些晶格结构的压缩响应。结果表明，调整几何参数可以实现各种异质力学响应，包括剪切带破坏和均匀压缩屈曲破坏。此外，可在更大范围的压缩模量（77.04 MPa 至 1073.5 MPa）和压缩强度（3.96 MPa 至 89.23 MPa）范围内实现机械性能。因此，可以满足结构承载能力（大模量高强度）和吸能（稳定平台舞台）的定制化要求。