Mat-1.3656 Seminar on numerical analysis and computational science

Monday, Oct 29, 2012, room U322 at 14.15, Eirola & Stenberg

Rolf Stenberg, A! Department of Mathematics and Systems Analysis
Weakly symmetric mixed methods for linear elasticity

We consider mixed methods for linear elasticity with stress tensor that is not a priori assumed to be symmetric. The symmetry is imposed weakly and the Lagrange multiplier introduced has the physical meaning of the rotation tensor. The stability and error analysis with mesh dependent norms is outlined.

Then we consider several families of methods; first one developed at Aalto exactly 26 years ago, then more recent methods of Arnold-Falk-Winther and Cockburn-Gopalakrishnan-Guzman. No numerical examples are given.