Shape recovery properties and load-carrying capacity of a 4D printed thick-walled kirigami-inspired honeycomb structure

查看全文 作　　者：Chengbin [1]Yue;Wei [1]Zhao;Fengfeng [1]Li;Liwu [1]Liu;Yanju [1]Liu;Jinsong [2]Leng 机构地区：[1]Department of Astronautical Science and Mechanics,Harbin Institute of Technology,Harbin 150001,China;[2]Center for Composite Materials and Structure,Harbin Institute of Technology,Harbin 150080,China 出　　处：《Bio-Design and Manufacturing》索引2023年第6卷第2期,共15页 基　　金：This work was supported by the National Natural Science Foundation of China(Nos.12072094 and 12172106). 摘　　要：Kirigami arts have provided a more promising method for building multiscale structures,which can shape two-dimensional(2D)sheets into three-dimensional(3D)configurations by cutting and folding.Here,we first carried out a theoretical analysis of the mechanical properties of 2D honeycomb lattice structures and experimental verification combined with finite element(FE)simulation.Furthermore,a series of thick-walled 3D kirigami-inspired honeycomb(TW3KH)structures with different mechanical properties were designed and fabricated on the exploration and optimization of geometric parameters of 2D honeycomb structures.The investigations of folding feasibility,self-expansion,and self-folding performance experimentally showed that our designed four-dimensional(4D)printing structure had good programmability and shape memory capability and a large volume change ratio during shape change.Meanwhile,research on its compression deformation behavior found that the TW3KH structures can recover load-bearing capacity very well when the angle is positive.Therefore,these TW3KH structures have great advantages in space-saving smart load-bearing equipment. 关 键 词：Shape memory 4D printing Kirigami arts Pattern transformation