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Accueil du site > Évènements > Séminaires > Séminaires IRPHE > Archives IRPHE > 2015

Vendredi 26 Juin 2015 / IRPHE

publié le , mis à jour le

Séminaire régulier IRPHE

Origami Mechanics : from the crease to the vertex

Orateur : Frédéric Léchenault
Laboratoire de Physique Statistique, Ecole Normale Superieure / PSL Research University

Résumé : Origami structures are usually seen as assemblies of rigid faces articulated around creases with hinge-like behaviour. Their deployment and degrees of freedom are purely kinematic, resulting only from the geometry of the crease network. However, in real folded structures, the base material, usually a paper sheet, can deform outside the creases. One can also envision origami crafted into plastic or even metal sheets. In such situations, face bending competes with crease actuation in a morphogenetic way. In order to rationalise this interplay, we investigate theoretically and experimentally the mechanical behaviour of an infinite sheet on which one or more straight creases meet at a single vertex. We find that these structures generically exhibit bistability, in the sense that they can snap through from one metastable configuration to another.

Date et lieu : le Vendredi 26 Juin 2015 à 11h00, salle de séminaire IRPHE