BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Indentations of plastic layers - Neil Balmforth (University of Bri
 tish Columbia)
DTSTART:20170919T080000Z
DTEND:20170919T084000Z
UID:TALK80421@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:The indentation of a layer of plastic material by a solid obje
 ct is a classical problem in plasticity theory. Using the method of slipli
 nes (characteristics) Prandtl provided two key solutions suitable for the 
 indentation of&nbsp\;either a relatively shallow or deep layer by a flat p
 late. In this talk I will summarize how both solutions\, and their general
 izations\, apply in three rather different problems:<br>1) locomotion thro
 ugh a yield-stress fluid (the viscoplastic version of Taylor&#39\;s 1951 v
 iscous problem)\,<br>2) the formation of footprints\, and<br>3) the washbo
 arding instability of a towed plate above a deformable layer
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR