title: Shape morphing Kirigami mechanical metamaterials.
abstract: Mechanical metamaterials exhibit unusual properties through the shape and movement of their engineered subunits. This work presents a new investigation of the Poisson's ratios of a family of cellular metamaterials based on Kirigami design principles. Kirigami is the art of cutting and folding paper to obtain 3D shapes. This technique allows us to create cellular structures with engineered cuts and folds that produce large shape and volume changes, and with extremely directional, tuneable mechanical properties. We demonstrate how to produce these structures from flat sheets of composite materials. By a combination of analytical models and numerical simulations we show how these Kirigami cellular metamaterials can change their deformation characteristics. We also demonstrate the potential of using these classes of mechanical metamaterials for shape change applications like morphing structures.
authors: Advanced Composites Centre for Innovation and Science (ACCIS), University of Bristol, Queens Building, University Walk, BS8 1TR, Bristol, UK.
authors: Robin M
authors: RM
authors: Neville
authors: Advanced Composites Centre for Innovation and Science (ACCIS), University of Bristol, Queens Building, University Walk, BS8 1TR, Bristol, UK.
authors: Fabrizio
authors: F
authors: Scarpa
authors: Advanced Composites Centre for Innovation and Science (ACCIS), University of Bristol, Queens Building, University Walk, BS8 1TR, Bristol, UK.
authors: Alberto
authors: A
authors: Pirrera
mesh_terms: D001696:Biomechanical Phenomena; D060846:Cell Engineering / Q000379:methods*; D008962:Models, Theoretical