摘要
受折纸形状的启发,通过单折纸单元结构(SOSs)的排列获得了两种折纸管。在准静态压缩载荷下,同向折纸管(SOT)的比吸能(SEA)值比反向折纸管(ROT)高13.46%.ROT显示了压缩旋转的变形模式,而SOT则是逐层破碎.通过折纸管和连接板的组合,提出了两层、三层和四层的折纸结构,它们的能量吸收效率明显高于折纸管。这些折纸结构表现出稳定的变形模式,主要是轴向压缩、扭转和混合变形模式.具有四个ROT的折纸结构(4R)的变形模式与麻花的形状相似.关于两层结构,由反向SOT(RSOT)和SOT组成的折纸结构的SEA值明显高于由ROT和SOT以及ROT和RSOT组成的折纸结构.此外,两层折纸结构的压缩性能明显优于三层和四层折纸结构.具有两个RSOT和两个SOT的两层折纸结构(2RS2S)的SEA值分别高于具有四个A细胞的三层折纸结构(4A)和具有一个C细胞和三个D细胞的四层折纸结构(1C3D)68.05%和64.48%.总之,这些折纸结构表现出卓越的机械性能,在吸能结构中具有广泛的应用潜力.
Inspired by origami shape,two origami tubes are obtained through the arrangement of single-origami-cell structures(SOSs).Under quasi-static compression load,the specific energy absorption(SEA)value of same direction origami tube(SOT)is 13.46%higher than that of reverse origami tube(ROT).ROT shows the deformation mode of compression rotation,and SOT is layer by layer crushing.Various two-,three-,and four-layer origami structures are proposed through the combination of origami tubes and connecting plates,and their energy absorption efficiency is significantly higher than that of origami tubes.These origami structures exhibit stable deformation modes,mainly axial compression,torsion,and mixed deformation modes.The deformation mode of origami structures with four ROTs(4R)is similar to Fried Dough Twists.Regarding two-layer structures,origami structures consisting of reverse SOTs(RSOTs)and SOTs have significantly higher SEA values than those composed of ROTs and SOTs as well as ROTs and RSOTs.In addition,the compression performance of two-layer origami structures is significantly better than that of three-and four-layer origami structures.The SEA value of two-layer origami structure with two RSOTs and two SOTs(2RS2S)is higher than that of three-layer origami structure with four A cells(4A)and four-layer origami structure with one C cell and three D cells(1C3D)68.05%and 64.48%,respectively.In summary,the origami structures show excellent mechanical properties and have broad application potential as energy absorbing structures.
作者
唐勇
李奇奇
苗秀娟
陈博浩
尹来容
刘鑫
顾成波
Yong Tang;Qiqi Li;Xiujuan Miao;Bohao Chen;Lairong Yin;Xin Liu;Chengbo Gu(College of Automotive and Mechanical Engineering,Changsha University of Science&Technology,Changsha 410114,China;AISN Innovative Design and Manufacturing Co.,Ltd.,Liuzhou 545000,China)
基金
This work was supported by the National Natural Science Foundation of China(Grant Nos.52005054,52172363,and 52275235)
the Natural Science Foundation of Hunan Province(Grant Nos.2021JJ40585 and 2023JJ20040)
the Scientific Research Fund of Hunan Provincial Education Department(Grant No.22B0307)
the Education Reform Project of Hunan Province(Grant No.HNJG-2021-0457).
