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5 de nov. de 2007 · A simple, robust, biomimetic responsive surface based on controlled elastic instabilities using an array of microlens shells as a surface geometry is presented. The snap-through transition is dictated by geometry, length-scale, and materials properties, thus the transition time, triggering sensitivity, and magnitude change are highly ...
Slender structures are ubiquitous. Commonly described by rods, plates, and shells, these thin structures are embodied by carbon nanotubes, air plane wings, blood vessels, spider silk, contact lenses, and human hair.
Douglas P. Holmes. Associate Professor of Mechanical Engineering, Boston University. Verified email at bu.edu - Homepage. mechanics elasticity geometry shells structural stability. Title. Sort. Sort by citations Sort by year Sort by title. Cited by.
Douglas Holmes. Associate Professor (ME, MSE) Office 730 Commonwealth Ave., EMA 213. Email dpholmes@bu.edu. Phone (617) 358-1294. Website Mechanics of Slender Structures (MOSS) Additional Affiliations Division of Materials Science & Engineering. Honors and Awards. NSF CAREER Award — CMMI: Mechanics of Materials, 2015. Areas of Interest.
We demonstrate how proper tuning of materials and geometry can generate instabilities at multiple length scales in a single structure. Swelling-induced deformations are common in many biological and industrial environments, and the shapes and patterns that emerge can vary across many length scales.
10 de feb. de 2014 · We consider the dynamic snapping instability of elastic beams and shells. Using the Kirchhoff rod and Föppl-von Kármán plate equations, we study the stability, deformation modes, and snap-through dynamics of an elastic arch with clamped boundaries and subject to a concentrated load.
We examine how thin elastic plates undergo rapid bending and buckling instabilities after non-homogenous exposure to a favorable solvent that swells the network. An unconstrained beam bends along its length, while a circular disc bends and buckles with multiple curvatures.
