基于参数化的3D打印个性化外固定支具设计研究

Research on personalized external fixator design based on parametric 3D printing

运用参数化的数学逻辑特性,探究个性化的3D打印外固定支具形态快速设计方法。通过分析3D打印外固定支具形态设计要素,归纳出3个形态设计要素变量,并转化为参数变量,构建参数变量之间逻辑关系,得到个性化3D打印外固定支具设计程序;其次,对由参数化程序生成的多种方案进行有限元强度分析以及程序效率测试。程序效率测试结果表明,此程序可快速生成个性化3D打印外固定支具,并且可对3D打印外固定支具个性化形态快速优化。根据有限元分析结果显示,使用此程序生成的多种3D打印外固定支具方案皆满足力学强度要求。通过参数化编写的建模程序实现了个性化3D打印外固定支具形态设计,简化3D打印外固定支具设计流程,可快速优化形态设计,提高设计效率。

By employing the parametric mathematical logic features,this study explored a rapid design method for personalized 3D-printed external fixator morphology.Through the analysis of design elements of 3D-printed external fixator morphology,three morphological design element variables were summarized and converted into parameter variables.The logical relationship was constructed between the parameter variables to obtain a personalized 3D-printed external fixator design program.Secondly,finite element strength analysis and program efficiency tests were conducted on multiple schemes generated by the parametric program.The results of the program efficiency test indicated that this program could quickly generate personalized 3D-printed external fixators and efficiently optimize the personalized morphology of the 3D-printed external fixator.According to the finite element analysis results,all the multiple 3D-printed external fixator schemes generated by this program met the requirements of mechanical strength.The modeling program written through parameterization enabled the morphological design of personalized 3D-printed external fixators.It simplified the design process of 3D-printed external fixators,allowing for rapid optimization of morphological design and improving design efficiency.