Variational Principles and Partial Differential Equations for Some Model Problems in Polycrystal Plasticity

PDE Seminar
Tuesday, September 30, 2008 - 3:15pm for 1.5 hours (actually 80 minutes)
Skiles 255
Marian Bocea – North Dakota State University, Fargo
Michael Westdickenberg
The yield set of a polycrystal may be characterized using variational principles associated to suitable supremal functionals. I will describe some model problems for which these can be obtained via Gamma-convergence of a class of "power-law" functionals acting on fields satisfying appropriate differential constraints, and I will indicate some PDEs which play a role in the analysis of these problems.