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SUMMARY:Some recent multiphysics problems in geomechanics - Professor Keni
 chi Soga\, CUED
DTSTART:20110204T140000Z
DTEND:20110204T150000Z
UID:TALK28571@talks.cam.ac.uk
CONTACT:Ms Helen Gardner
DESCRIPTION:Soils are diverse\, ranging from more common materials such as
  clay\, silt and sand to less familiar soils such as peat and methane hydr
 ate soils. They are particulate\, and this particular nature leads to resp
 onse characteristics such as dilatancy\, the importance of state\, stress 
 dependant strength and stiffness\, non-linearity etc. Furthermore geomecha
 nics problems require multiphysics analysis. For example\, the material re
 sponse is influenced by pore pressure and temperature. Hence geotechnical 
 engineers often spend much of their time measuring the mechanical behavior
  of geomaterials and picking the "right" model to solve the problem. Such 
 tasks are becoming more important nowadays as the use of numerical methods
  like the finite element method is standard engineering practice. The talk
  will cover the following multiphysics problems that the speaker has been 
 involved with. (1) Long-term effect of tunneling in London clay addressing
  the importance of small strain stiffness and anisotropy\, (2) Large scale
  submarine landslide highlighting the need of a large deformation model an
 d (3) Wellbore simulation of methane production showing the development of
  a model for methane hydrate soil.
LOCATION:Oatley Seminar Room\, Department of Engineering
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