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SUMMARY:Folded Shell Structures - Mark Schenk\, CUED
DTSTART:20091016T140000Z
DTEND:20091016T150000Z
UID:TALK20956@talks.cam.ac.uk
CONTACT:Katerina Ondrova
DESCRIPTION:\n\nFolded Shell Structures\n-----------------------\nBy intro
 ducing a ‘local’ texture to thin-walled sheets\, the ‘global’  \nm
 echanical properties of the sheets can be favourably modified. In this tal
 k I will introduce the intriguing mechanical properties of Folded Textured
  Sheets\, by way of two examples. The fold patterns allow the sheets to un
 dergo large deformations\, as well as change their global Gaussian curvatu
 re without stretching the material. Furthermore\, both example sheets shar
 e the remarkable property that their Poisson’s ratio under bending is of
  opposite sign to that under extension. The properties of the sheets were 
 studied using a simple numerical model\, where the folded sheets are repre
 sented by a pin-jointed framework\; this captures the key deformation mode
 s.\n
LOCATION:Engineering Department -LR6
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