基于三周期极小曲面的多孔结构力学性能研究  

Research on Mechanical Properties of Porous Structures Based on Triply Periodic Minimal Surfaces

作　　者：张曦 丁力平[1] 吴沛豪 ZHANG Xi;DING Liping;WU Peihao(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《机械制造与自动化》2024年第1期49-54,共6页Machine Building & Automation

摘　　要：针对设计多孔结构时难以直接预测其力学性能的问题,选取三周期极小曲面中的Schwarz_P曲面,采用选区激光熔化技术制备不同结构参数的Schwarz_P结构;通过压缩试验研究其力学性能,建立Schwarz_P结构的结构参数与力学性能之间的关系模型。试验结果表明:建立的模型拟合优度在98%以上,采用该模型预测的力学性能与实测值基本一致,在设计多孔结构时可直观地预估其力学性能。To overcome the difficulty in directly predicting the mechanical properties in porous structure designing,this paper establishes a relationship model between the structural parameters and the mechanical properties of the Schwarz_P structure,by selecting the Schwarz_P surface in the triply periodic minimal surfaces,applying selective laser melting technology to manufacture the Schwarz_P structures with different structural parameters and conducting compression test for the study of Schwarz_P structures'mechanical properties.The test results show that the goodness of fit for the designed model is more than 98%,the mechanical properties predicted by the model are basically consistent with the measured values,and the mechanical properties can be intuitively predicted when designing porous structure.

关 键 词：三周期极小曲面 多孔结构 力学性能 选区激光熔化 

分 类 号：TN249[电子电信—物理电子学] TH164[机械工程—机械制造及自动化]