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Key figures

Key figures

189 people work at LJLL

90 permanent staff

82 researchers and permanent lecturers

8 engineers, technicians and administrative staff

99 non-permanent staff

73 Phd students

14 Post-doc and ATER

12 emeritus scholars and external collaborators

 

Figures : March 2019

 

J.F. Babadjian

Lundi 25 septembre 2017

J.F. Babadjian (Université Paris-Sud, Orsay)

Concentration analysis of brittle damage

Résumé

This talk is concerned with an asymptotic analysis of a variational model of brittle damage, when the damaged zone concentrates into a set of zero Lebesgue measure, and, at the same, the stiffness of the damaged material becomes arbitrarily small. Two non trivial regimes will be highlighted. For the first one, damage is so negligible that the model converges to a purely elastic one. In the second regime, concentration leads to a limiting energy with linear growth as typically encountered in plasticity. This is an ongoing work with F. Iurlano.