基于有限元方法的类手性蜂窝夹芯椎体植入物结构优化设计  

Structural Optimization Design of Chiral-Like Honeycomb Sandwich Vertebral Implants Using Finite Element Methods

作　　者：聂文彬 郭媛 张绪树 赵轶波[2] 赵斌[2] 徐志康 柯海波 NIE Wenbin;GUO Yuan;ZHANG Xushu;ZHAO Yibo;ZHAO Bin;XU Zhikang;KE Haibo(College of Biomedical Engineering,Taiyuan University of Technology,Jinzhong 030600,Shanxi,China;Department of Orthopaedic,Shanxi Medicine University Second Hospital,Taiyuan 030001,China)

机构地区：[1]太原理工大学生物医学工程学院,山西晋中030600 [2]山西医科大学第二医院骨科,太原030001

出　　处：《医用生物力学》2025年第2期421-427,共7页Journal of Medical Biomechanics

基　　金：国家自然科学基金项目(11472185);山西省华晋骨科公益基金。

摘　　要：目的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,并讨论不同结构的变形机制对力学性能的影响。结果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。结论作为一种新型类手性蜂窝结构,该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。Objective To enhance the mechanical properties of trichiral honeycomb sandwich structures and satisfy the design criteria for vertebral implant structures.Methods A chiral-like honeycomb sandwich structure with an auxiliary support structure was constructed for optimal design.The finite element method was used to study the influence of the auxiliary support structure on the chiral-like honeycomb sandwich structure and the relationship between the support position and mechanical property parameters.Furthermore,the influence of the deformation mechanism of different structures on mechanical properties was discussed.Results All chiral-like honeycomb sandwich structures exhibited enhanced mechanical properties in comparison to trichiral honeycomb sandwich structures.The mechanical properties of the chiral-like d_(CW) honeycomb sandwich structure with the auxiliary support structure positioned perpendicular to the ligament were optimal,and this position represented the optimal support position.When the volume was used as a control variable,the compressive stiffness,stiffnessto-mass ratio,and transverse strain of the chiral-like honeycomb sandwich structure in the x_(1) direction were significantly correlated with the change of the support position,and all of them were positively correlated.Conclusions 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.

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 

分 类 号：R318.01[医药卫生—生物医学工程]