【摘要】 目的 为了提高三手性蜂窝夹芯结构的力学性能，符合椎体植入物结构的设计标准。方法 通过添加辅助支撑结构进行优化设计，构建类手性蜂窝夹芯结构，采用有限元法研究辅助支撑结构对类手性蜂窝夹层结构的影响和支撑位置与力学性能指标之间的关系，并讨论了不同结构的变形机制对力学性能的影响。结果 研究表明，与三手性蜂窝夹层结构相比，类手性蜂窝夹层结构都具有较优的力学性能，其中辅助支撑结构垂直于韧带的类手性"d" _"CW" 蜂窝夹层结构最优。结论 类手性"d" _"CW" 蜂窝夹层结构的力学性能最优，该位置为最佳的支撑位置；当体积作为控制变量，类手性蜂窝夹层结构在x_1方向的压缩刚度、刚度质量比和横向应变与支撑位置的变化显著性相关，且均为正相关。作为一种新型类手性蜂窝结构，为蜂窝夹层结构作为椎体植入物结构的优化设计和临床应用提供生物力学依据。 【关键词】 类手性蜂窝夹层结构；辅助支撑；结构优化；有限元仿真；椎体植入物

【Abstract】 Objective In order to enhance the mechanical properties of trichiral honeycomb sandwich structures and to satisfy the design criteria for vertebral implant structures. Methods We constructed a chiral-like honeycomb sandwich structure with an auxiliary support structure for optimal design. We used the finite element method to study the influence of the auxiliary support structure on the chiral-like honeycomb sandwich structure and the relationship between the support position and the mechanical property indexes. Furthermore, we discussed the influence of the deformation mechanism of different structures on the mechanical properties. Results The results demonstrate that all chiral-like honeycomb sandwich structures exhibit enhanced mechanical properties in comparison to trichiral honeycomb sandwich structures. The most optimal chiral-like "d" _"CW" honeycomb sandwich structures are characterised by the presence of auxiliary support structures oriented perpendicular to the ligaments. Conclusion The mechanical properties of the chiral-like "d" _"CW" honeycomb sandwich structure with the auxiliary support structure positioned perpendicular to the ligament are optimal, and this position represents the optimal support position. When the volume is used as a control variable, the compressive stiffness, stiffness-to-mass ratio, and transverse strain of the chiral-like honeycomb sandwich structure in the x_1 direction are significantly correlated with the change of the support position, and all of them are positively correlated. As a novel chiral-like honeycomb structure, it provides a biomechanical basis for the optimal design and clinical application of honeycomb sandwich structures as vertebral implant structures. 【Keywords】 Chiral-like honeycomb sandwich structure; Auxiliary support structure; Structural optimization; Vertebral implant