Compression performance of a bionic origami structure based on the vein and membrane of dragonflies
Origami structures possess unique mechanical properties induced by folding and have extensive application prospects in various engineering fields such as robotics,aerospace,and materials science.In this work,an origami structure based on the coupling rigid and flexible vein-membrane of the dragonfly was developed to improve the low load-carrying capacity and unstable folding path in the Kresling origami.Furthermore,the Kresling origami structure was fabricated using soft silicone gel as the membrane and embedded hard resin as the vein.The origami structure exhibits variable stiffness,excellent folding characteristics,and a high folding ratio.The quasistatic compression experiment results revealed that the origami structure with embedded resin has a single stable folding path,with a single degree of freedom between the axial compression and interlayer rotation angle.Compared with the origami structure without embedded resin,the buckling of mountain creases was limited by the rigid embedded resin,which can substantially improve the mechanical performance of the origami.For the origami structure with n=4,the maximum value of the reaction force increased by 60.87％,and the reaction force also exhibited hysteresis,highlighting the stable energy dissipation characteristic of the origami structure.Moreover,after 1000 loading-recovery cycles,the energy dissipation of the origami structure only decreased by 3.60％.
origamibionicsquasi-static compressionvariable stiffnesshysteretic energy dissipation
万方数据
维普
