Owing to their lightweight design, high energy absorption capacity, and excellent thermal and sound insulation properties, lattice structures have many potential applications in the fields of security, aerospace, biomedicine, and heat dissipation. In this study, a gyroid-type triply periodic minimal surface is used to design lattice structures. Gyroid uniform lattice structures and gyroid graded lattice structures are mathematically designed and fabricated using selective laser melting with a SS 316 L stainless steel powder. The mechanical properties of these structures are studied under a compression load, and the deformation differences between the graded and uniform structures are compared. The finite element method is used to simulate the compression process, and the experimental and simulation results are qualitatively compared. Results show that during plastic deformation, the stress change in the graded structure is larger than that in the uniform structure. By controlling the volume fraction, mechanical properties can be specifically tailored, which provides the design guidelines for the application of this structure.

由于其轻质设计、高能量吸收能力和优异的隔热隔音性能，格子结构在安全、航空航天、生物医学和散热等领域具有许多潜在的应用。在这项研究中，使用陀螺型三周期最小表面来设计晶格结构。Gyroid 均匀晶格结构和 Gyroid 渐变晶格结构是使用 SS 316 L 不锈钢粉末的选择性激光熔化数学设计和制造的。研究了这些结构在压缩载荷下的力学性能，比较了分级结构和均匀结构之间的变形差异。采用有限元法对压缩过程进行模拟，将实验结果与模拟结果进行定性比较。结果表明，在塑性变形过程中，梯度结构的应力变化大于均匀结构的应力变化。通过控制体积分数，可以专门定制力学性能，为这种结构的应用提供了设计指南。