Ladybug robot boarded the \”Science\” headlines! Possible future tasks such as searching investigation
ladybird wings by sophisticated resilin and veins so arranged that a flexible film having both wings of the energy storage and self-locking function. The former makes wings can rapidly within 100 milliseconds, which allows the wings under tremendous aerodynamic forces during flight. When not in use, the film may be tightly folded wings also recovered to below crustaceans. PNAS , 2017, 114 (22). Compared to the stunning natural structure, traditional mechanical structure is still not organically above properties. extending outer collapsible tubular member (Storable tubular extendible member, STEM) despite good energy storage properties and self-locking, however, it is more difficult to fold flat storage; origami structures (Origami) While providing a compact and lightweight structural design, but the lack of energy storage and self-locking ability. Installation of additional auxiliary member can solve this problem, but need to sacrifice compactness of origami. Root cause of the problem is that the above-described origami traditional origami structures considered in the design of structural motifs of a material of high hardness, which are connected together by flexible joints in order to achieve a low hardness folded. However, high hardness and softness joint primitives folding and storage and stretch characteristics are not provided with self-locking.
Recently, the Seoul National University (Seoul National University, SNU) of Kyu-Jin Professor Cho research team by ladybug wings inspired design of a polyethylene terephthalate (polyethylene terephthalate, PET) is a bent sheet structural motif, a flexible fabric tear origami structures flexibly connected. PET curved primitives also provide storage and self-locking properties, and is folded flat PET substrate element 116 can be fully deployed within milliseconds, Origami expanded structure can withstand the loads to 150 times its own weight. This design strategy is not an effective solution to the storage origami structure, the inherent problem is not self-locking, hang gliding is scalable and origamiHopping Robots and other applications to provide a broader design space. The works in \”Ladybird beetle-inspired compliant origami\” was published in Science Robotics. Professor Kyu-Jin Cho, Seoul National University is the only corresponding author. look at how cool this Ladybug Robot: ladybug robot was released from the high-altitude, expand their own wings, flight, landing on their own wings folded, crawling encountered jumping, flying wings open [ 123] ladybird flexible inspired origami structures
The design parameters of the flexible origami structure comprises a sheet width (w), thickness (t) and the curved the radius (r). When designing origami structure, the performance of major concern include structural quality (mass), the maximum deformation (strain), self-locking torque (locking moment) and energy storage (energy). Each setEffects of parameters on the basis of the performance shown in Fig. In order to meet the design requirements, to optimize the thickness, and then based on the required quality and maximum deformation and bending radius of the sheet width adjustment.
fleas robots constituting a flexible structure origami , origami folded into the sheet structure not only stores energy rubber cord, which structural motifs also store energy, and thus jumping height 50% higher than the traditional flea robots. summary