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SUMMARY:Daya Reddy (University  of Cape Town)
DTSTART:20201221T144000Z
DTEND:20201221T161000Z
DTSTAMP:20260405T174525Z
UID:NSCM/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NSCM/5/">Som
 e mathematical aspects of models of strain-gradient plasticity</a>\nby Day
 a Reddy (University  of Cape Town) as part of Nečas Seminar on Continuum 
 Mechanics\n\n\nAbstract\nStrain-gradient plasticity has become well establ
 ished as an approach to modelling seize-dependent phenomena at the meso- a
 nd microscales. This presentation is concerned with a class of models of s
 train-gradient plasticity\, which mathematically are formulated as variati
 onal inequalities. Conditions for well-posedness are reviewed\, following 
 which attention is given to some aspects of what is referred to as the dis
 sipative model. Though in a sense a natural extension of conventional plas
 ticity\, this model possesses some distinctive features\, most particularl
 y that the plastic flow relations take a global form. The consequences of 
 this feature are discussed\, for example\, in relation to determining the 
 stage at which incipient plastic behaviour takes place. The presentation a
 lso treats issues relevant to approximations\, such as the convergence of 
 predictor-corrector algorithms\, and approximations under conditions of mi
 nimal regularity.\n
LOCATION:https://researchseminars.org/talk/NSCM/5/
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