The reinforcement design of lightweight lattice is a hot spot to seek for higher mechanical performance. In this study, the strut-reinforced concept is proposed from the perspective of space filling. The specimens with 4 × 4 × 4 cells were fabricated through Selective Laser Melting (SLM) technique with the metallic 316L stainless steel. The mechanical response and deformation mechanism were investigated by means of quasi-static compression test and numerical simulation. Superior performance was obtained in strut-reinforced hierarchical lattices compared with conventional one, in terms of total energy absorption, specific energy absorption, mean force and deformation process. The filled effect, ribbed effect and interaction effect of specific parts generated by the hierarchical configuration were proved to enhance the compression behavior. The influence of geometry variations on mechanical response was determined and the function of struts becomes more dominant as the diameter increases. In addition, the reinforcement mechanism was revealed via comparing the different deformation characteristics. Afterwards, the bearing capacity of the reinforced lattice subjected to oblique loading was compared with conventional lattice.

轻量化点阵的加固设计是寻求更高机械性能的热点。本研究从空间填充的角度提出了支柱加固的概念。具有 4 × 4 × 4 电池的样品通过选择性激光熔化 (SLM) 技术与金属 316L 不锈钢制成。通过准静态压缩试验和数值模拟研究了其力学响应和变形机制。在总能量吸收、比能量吸收、平均力和变形过程方面，与传统晶格相比，在支柱增强的分层晶格中获得了优越的性能。证明分层配置产生的特定部分的填充效果、肋状效果和交互效果增强了压缩行为。确定了几何变化对机械响应的影响，随着直径的增加，支柱的功能变得更加重要。此外，通过比较不同的变形特性，揭示了加固机制。之后，将斜荷载作用下的加强格子的承载力与常规格子进行了比较。