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SUMMARY:Gradient damage models and brittle fracture: crack nucleation and 
 complex patterns - Corrado Maurini\, Université Pierre et Marie Curie Par
 is VI
DTSTART:20150115T113000Z
DTEND:20150115T123000Z
UID:TALK57008@talks.cam.ac.uk
CONTACT:Chris Richardson
DESCRIPTION:The classical theory of fracture mechanics developed in the la
 st century is very successful in stating the non-propagation conditions fo
 r pre-existing cracks\, or to study their propagation along pre-assigned p
 aths. \nHowever\, the theoretical modelling and the predictive numerical s
 imulation of crack nucleation and the emergence of complex crack patterns 
 is still an open research subject. In the last years\, variational approac
 hes to fracture opened new perspectives\, by formulating fracture mechanic
 s as an energy minimisation problem where the crack path is treated as gen
 uine unknown. In this talk I will discuss about the use of gradient damage
  models as a phase-field regularised formulation of brittle fracture. Repo
 rting the results of theoretical analyses and numerical experiments\, I wi
 ll show how similar models can retrieve crack nucleation\, crack propagati
 on\, and the morphogenesis of complex crack patterns in 2D or 3D. Examples
  will include thermal shock fracture in ceramics and thin-film cracks.
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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