Poking of sheets and shells: how wrinkling reveals new isometries

Speaker: Dominic Vella
Affiliation: Oxford University
When: Wednesday 30th September 2015
Time: 00:00:11
Abstract: Poking is a natural way to measure the world around us - how an object resists poking tells us how stiff it is. I will focus on the mechanics of this poking for objects that are extremely thin. Such objects are very difficult to stretch rather than bend and so their isometries (distance-preserving deformations) are natural ways of understanding their deformation. I will show that the thinness of these objects often leads to wrinkling and, in turn, to isometries that were previously unknown. contact: