CMU Campus
Center for                           Nonlinear Analysis
CNA Home People Seminars Publications Workshops and Conferences CNA Working Groups CNA Comments Form Summer Schools Summer Undergraduate Institute PIRE Cooperation Graduate Topics Courses SIAM Chapter Seminar Positions Contact
Seminar Abstracts

Adriana Garroni, Department of Mathematics, University of Rome "La sapienza"

"Quasi-static evolution for a variational model of damage"


We consider a variational model for damage introduced by Francfort and Marigo. In this model the damage process consist in passing from an initial elastic state (undamaged) to a weaker elastic stated (damaged) and the resulting energy density is non quasi convex. For a given time-dependent external loading we establish existence of a relaxed variational evolution where, at each time, the two states of the material combine to form a fine mixture, optimal from the standpoint of the applied load at that time, yet preserving the irreversibility of the damaging process.

Time: 1:30 P.M.
Location: DH 4303