نتایج جستجو برای: spherical shells
تعداد نتایج: 61707 فیلتر نتایج به سال:
Active elastic instabilities are common phenomena in the natural world, where they have character of sudden mechanical morphings. Frequently, driving force instability mechanisms has a chemo-mechanical nature, which makes very different from standard instabilities. In this paper, we describe and study active occurring swollen spherical closed shell, confining water-filled cavity, during dehydra...
The fullerene-50 is a 'magic number' cage according to the 2(N + 1)(2) rule. For the three lowest isomers of C50 with trigonal and pentagonal symmetries, we calculate the sphericity index, the spherical parentage of the occupied π-orbitals, and the current density in an applied magnetic field. The minimal energy isomer, with D3 symmetry, comes closest to a spherical aromat or a superaromat. In ...
The formation of localized periodic structures in the deformation of elastic shells is well documented and is a familiar first stage in the crushing of a spherical shell such as a ping-pong ball. While spherical shells manifest such periodic structures as polygons, we present a new instability that is observed in the indentation of a highly ellipsoidal shell by a horizontal plate. Above a criti...
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