摘要：目的 对3D打印自就位钛网主体与两端定位翼的连接处进行优化，包括定位翼的厚度、宽度以及连接处构型。分析优化改进前后仿真模型的结构性能，最终获得最优设计的新型自就位钛网。方法 基于SolidWorks（Dassault Systemes,美国，2020 SP03）软件，构建自就位钛网仿真模型，优化、改进尺寸参数。采用仿真软件ANSYS Workbench（ANSYS,美国，2020 R2），对连接处的厚度和宽度等进行多目标优化设计。并在连接处设计间断连接构型，获得优化后的自就位钛网。结果 当对新型自就位钛网嵴顶外表面施加40N载荷，连接处最大应变未超过钛网的断裂应变，且应力与形变皆在可接受范围内。当对一侧定位翼的游离端施加10N的45°弯折力时，连接处最大应变超过了钛网的断裂应变，且裂纹集中于连接线处。虚拟模型的仿真结果与力学性能验证试验的结果基本一致。结论 通过优化自就位个性化钛网连接体的尺寸以及构型，实现了手术中摆放、按压个性化钛网时，连接体不发生折断和较大位移。术后对定位翼游离端简单弯折，即可实现连接体沿连接线整齐断裂分离，并且断面光滑平整。本研究对自就位个性化钛网连接处尺寸及构型进行的优化取得了较为理想的临床效果。
Abstract:Objective To optimize the connection between the 3D printing self-positioning titanium mesh main body and the positioning wings at both ends, including thickness, width, and junction configuration of the positioning wings at the connection site. And to analyze and optimize the structural performance of the simulation model before and after the improvement, ultimately obtain the optimal design of a new type self-positioning titanium mesh. Method In the software SolidWorks(Dassault Systemes,America,2020 SP03), build a self-positioning titanium mesh simulation model to optimize and improve dimensional parameters. Then, the simulation software ANSYS Workbench (ANSYS, USA, 2020 R2) is used to conduct multi-objective optimization design for the thickness and width of the connection. And design a discontinuous connection configuration at the connection to obtain an optimized self-positioning titanium mesh. Results When a 40N load was applied to the outer surface of the new self-positioning titanium mesh alveolar crest, the maximum strain at the junction does not exceed the fracture strain of the titanium mesh, and the stress and deformation are within an acceptable range. When a bending force of 10N and 45° was applied to the free end of the positioning wing on one side, the maximum strain at the connection site exceeded the fracture strain of the titanium mesh, and the crack propagation path is concentrated at the connecting line. The experimental results of the virtual model are basically consistent with the mechanical performance verification test. Conclusion By optimizing the size and configuration of the self-positioning individuation titanium mesh connector, it is achieved that when placing and pressing the individuation titanium mesh during surgery, the connector does not break or shift significantly. After surgery, a simple bending of the free end of the positioning wing can achieve a neat fracture and separation of the connector along the connecting line, with a smooth and flat cross-section. This study has achieved ideal clinical results by optimizing the size and configuration of the self-positioning individuation titanium mesh connection.