%0 Journal Article %1 schieber2018hindwings %A Schieber, Gundula %A Born, Larissa %A Bergmann, P. %A Körner, Axel %A Mader, Anja %A Saffarian, Saman %A Betz, Oliver %A Milwich, Markus %A Gresser, Götz T. %A Knippers, Jan %D 2018 %I IOP Publishing Ltd %J Bioinspiration & Biomimetics %K 2018 bergmann betz biomimetic born concept foldable from:petraheim generator gresser hindwings hingeless insects itke knippers körner mader milwich saffarian schieber shading system %N 1 %R 10.1088/1748-3190/aa979c %T Hindwings of insects as concept generator for hingeless foldable shading systems %V 13 %X Hingeless shading systems inspired by nature are increasingly the focus of architectural research. In contrast to traditional systems, these compliant mechanisms can reduce the amount of maintenanceintensive parts and can easily be adapted to irregular, doubly curved, facade geometries. Previousmechanisms rely merely on the reversible material deformation of composite structures with almost homogeneous material properties. This leads to large actuation forces and an inherent conflict between the requirements of movement and the capacity to carry external loads. To enhance the performance of such systems, current research is directed at natural mechanisms with concentrated compliance and distinct hinge zones with high load-bearing capacity. Here, we provide insights into our biological findings and the development of a deployable structure inspired by the Flexagon model of hindwings of insects in general and the hierarchical structure of the wing cuticle of the shield bug (Graphosoma lineatum). By using technical fibre-reinforced plastics in combination with an elastomer foil, natural principles have been partially transferred into a multi-layered structure with locally adapted stiffness. Initial small prototypes have been produced in a vacuum-assisted hot press and sustain this functionality. Initial theoretical studies on test surfaces outline the advantages of these bio-inspired structures as deployable external shading systems for doubly curved facades.

@article{schieber2018hindwings, abstract = {Hingeless shading systems inspired by nature are increasingly the focus of architectural research. In contrast to traditional systems, these compliant mechanisms can reduce the amount of maintenanceintensive parts and can easily be adapted to irregular, doubly curved, facade geometries. Previousmechanisms rely merely on the reversible material deformation of composite structures with almost homogeneous material properties. This leads to large actuation forces and an inherent conflict between the requirements of movement and the capacity to carry external loads. To enhance the performance of such systems, current research is directed at natural mechanisms with concentrated compliance and distinct hinge zones with high load-bearing capacity. Here, we provide insights into our biological findings and the development of a deployable structure inspired by the Flexagon model of hindwings of insects in general and the hierarchical structure of the wing cuticle of the shield bug (Graphosoma lineatum). By using technical fibre-reinforced plastics in combination with an elastomer foil, natural principles have been partially transferred into a multi-layered structure with locally adapted stiffness. Initial small prototypes have been produced in a vacuum-assisted hot press and sustain this functionality. Initial theoretical studies on test surfaces outline the advantages of these bio-inspired structures as deployable external shading systems for doubly curved facades.}, added-at = {2020-05-22T14:25:14.000+0200}, author = {Schieber, Gundula and Born, Larissa and Bergmann, P. and Körner, Axel and Mader, Anja and Saffarian, Saman and Betz, Oliver and Milwich, Markus and Gresser, Götz T. and Knippers, Jan}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/274e09eeb57f908057a6dc1d8cb09bb68/itke}, doi = {10.1088/1748-3190/aa979c}, interhash = {a935fd88e786abfe16674a6915a1f342}, intrahash = {74e09eeb57f908057a6dc1d8cb09bb68}, journal = {Bioinspiration & Biomimetics}, keywords = {2018 bergmann betz biomimetic born concept foldable from:petraheim generator gresser hindwings hingeless insects itke knippers körner mader milwich saffarian schieber shading system}, month = dec, number = 1, publisher = {IOP Publishing Ltd}, timestamp = {2020-08-03T10:27:40.000+0200}, title = {Hindwings of insects as concept generator for hingeless foldable shading systems}, volume = 13, year = 2018 }