光固化制造仿生蝴蝶点阵结构压缩及吸能性能研究  

Study on Compression and Energy Absorption Properties of Bionic Butterfly Lattice Structure Made by Photo-Curing Molding Technology

作　　者：谢炜豪 杨永泰 Xie Weihao;Yang Yongtai(College of Mechanical and Electrical Engineering,Fujian Agriculture and Forestry University,Fuzhou 350000,Fujian,China;Quanzhou Institute of Equipment Manufacturing,Haixi Institute,Chinese Academy of Sciences,Jinjiang 362200,Fujian,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]福建农林大学机电工程学院,福建福州350000 [2]中国科学院海西研究院泉州装备制造研究中心,福建晋江362200 [3]中国科学院大学,北京100049

出　　处：《应用激光》2024年第10期147-156,共10页Applied Laser

基　　金：福建省科技厅STS计划配套项目(2022T3050);泉州市科技计划项目(2020FX01)。

摘　　要：结构功能梯度点阵模型不仅有优异的抗压及吸能特性,而且能够达到轻量化的效果,因而被广泛运用在机械、车辆、航空航天等领域。受蝴蝶蝶翼几何形状的启发,结合菱形正十二面体单胞,设计一种新型单胞,通过参数化建模将其阵列为等杆径点阵结构,并设计相应的梯度点阵结构进行对比。以光敏树脂为原料,运用光固化增材制造技术进行结构制备。基于准静态压缩实验探究了两种点阵结构的压缩性能及吸能性能。结果表明,两种结构都以逐层塌陷的方式达到致密化,但裂纹扩展的方向相反;两种结构的单位体积应变能随着杆径及几何形状参数的增大而增加;在点阵结构尺寸相同的情况下,梯度点阵结构用料更少,但能大幅度提升比吸能。The structure function gradient lattice model exhibits superior compression and energy absorption properties,making it a popular choice in machinery,vehicles,aerospace,and other industries.Inspired by the geometry of butterfly wing and combined with rhombohedral regular dodecahedral monocytes,novel module is proposed in this study.Through parametric modeling,the monocytes are configured into lattice structures with uniform rod diameters,and gradient lattice structures are developed for comparative analysis.Utilizing photo-curing additive manufacturing with photosensitive resin,the structures are fabricated.Based on quasi-static compression experiments,the compression and energy absorption properties of the two lattice structures are investigated.The results show that both structures are densified by layer by layer collapse,but the crack propagation direction is opposite.The strain energy per unit volume of the two structures increases with the increase of rod diameter and geometric shape parameters.Notably,the gradient lattice structure demonstrates enhanced specific energy absorption while utilizing less material compared to the uniform lattice structure of the same size.

关 键 词：光固化成形技术 仿生结构设计 梯度点阵结构 压缩性能 吸能性能 

分 类 号：TH164[机械工程—机械制造及自动化]