Buckling-induced retraction of spherical shells: A study on the shape of aperture.

ABSTRACT: Buckling of soft matter is ubiquitous in nature and has attracted increasing interest recently. This paper studies the retractile behaviors of a spherical shell perforated by sophisticated apertures, attributed to the buckling-induced large deformation. The buckling patterns observed in experiments were reproduced in computational modeling by imposing velocity-controlled loads and eigenmode-affine geometric imperfection. It was found that the buckling behaviors were topologically sensitive with respect to the shape of dimple (aperture). The shell with rounded-square apertures had the maximal volume retraction ratio as well as the lowest energy consumption. An effective experimental procedure was established and the simulation results were validated in this study.

SUBMITTER: Lin S 

PROVIDER: S-EPMC4476044 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature