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PLENARY LECTURES AND VIP GUESTS
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Istvan Groma
Eotvos University Budapest
30 Years Of Gradient Terms
Aifantis International Symposium
(2nd Intl. symp. on Multiscale Material Mechanics in the 21st Century)[Dislocation Patterning]
Back to Plenary Lectures »
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Abstract:
In crystal plasticity, there are several phenomena, like size effect, dislocation patterning, dislocation core structure that cannot be modeled with traditional local plasticity theories. Pioneered by Elias Aifantis during the past 30 years, several different gradient type terms were proposed to account for the different nonlocal effects.
In the talk, we present a survey on our current understanding of the statistical physics origin of gradient terms in continuum theory of dislocations and in nonlocal elasticity theory. It is discussed what sort of terms can or cannot be justified.
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