Papers › Curved-crease origami for morphing metamaterials
Curved-crease origami for morphing metamaterials
Asma Karami, Adam Reddy, Hussein Nassar
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We find a closed-form expression for the Poisson's coefficient of curved-crease variants of the ``Miura ori'' origami tessellation. This is done by explicitly constructing a continuous one-parameter family of isometric piecewise-smooth surfaces that describes the action of folding out of a reference state. The response of the tessellations in bending is investigated as well: \comment{using a numerical convergence scheme,} the effective normal curvatures under infinitesimal bending are found to occur in a ratio equal and opposite to the Poisson's coefficient. These results are the first of their kind and, by their simplicity, should provide a fruitful benchmark for the design and modeling of curved-crease origami and compliant shell mechanisms. Here, the developed methods are used to design a curved crease 3D morphing solid with a tunable self-locked state.
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