Design and analysis of a thick Miura-ori folded structure with large negative Poisson’s ratio

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In this article, effective properties of Miura-ori patterned sheets are studied. The thickness of the facets is allowed to have considerably large values; hence, the structural response of the system cannot be determined by considering only the kinematics of the folding. In particular, large negative values of the Poisson’s ratio have been observed for particular sets of parameters. Numerical outcomes, for periodic and finite systems, have been validated by an experimental campaign, where several specimens with different geometries and materials have been tested. The elastic fields of the specimens have been measured with the digital image correlation method.