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SUMMARY:Failure criteria and plan strain collapse - Professor Rocco Lagioi
 a\, DICATAM – University of Brescia\, Italy
DTSTART:20130709T150000Z
DTEND:20130709T160000Z
UID:TALK46250@talks.cam.ac.uk
CONTACT:Jen Fusiello
DESCRIPTION:The use of numerical analyses of boundary values problems has 
 become very frequent in both research and geotechnical practice. There are
  numerous examples of the successful application of these techniques to ev
 en very complex situations. Surprisingly\, however\, simple geotechnical p
 roblems can be found in the literature for which the use of these techniqu
 es is problematic\, even when the soil behaviour is reproduced by means of
  very simple constitutive models\, such as those based on the theory of pe
 rfect plasticity.\nIn this talk it will be shown that many of the problems
  are related to the formulation of classical failure criteria for geomater
 ials and that the adoption of a very recent reformulation of two such crit
 eria\,  namely  the  Mohr-Coulomb and  the  Matsuoka-Nakai\, allows  to  p
 erform the  analyses without any problem. As numerical analyses are often 
 performed by considering a cross section of an infinite long structure\, t
 he link between failure conditions and plane strain plastic collapse will 
 be also discussed and sources of potential problems highlighted.\n
LOCATION:Engineering Department - Lecture Room 6
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