<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">DEPARTMENT OF COMPUTER SCIENCE<div><br class="webkit-block-placeholder"></div><div>UNIVERSITY OF CHICAGO</div><div><br class="webkit-block-placeholder"></div><div>Date: Wednesday, May 7, 2008</div><div>Time: 2:30 p.m.</div><div>Place: Ryerson 251, 1100 E. 58th Street</div><div><br class="webkit-block-placeholder"></div><div>----------------------------------------------------------</div><div><br class="webkit-block-placeholder"></div><div>Speaker:<span class="Apple-tab-span" style="white-space: pre; "> </span>Marie Rognes</div><div><br class="webkit-block-placeholder"></div><div>From:<span class="Apple-tab-span" style="white-space: pre; "> </span>University of Oslo</div><div><br class="webkit-block-placeholder"></div><div>Web page:<span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://folk.uio.no/meg/">http://folk.uio.no/meg/</a></div><div><br class="webkit-block-placeholder"></div><div>Title: <span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: 16px; "><font class="Apple-style-span" face="Helvetica" size="3"><span class="Apple-style-span" style="font-size: 12px;">Linear
Viscoelasticity: Stress-Displacement Mixed Finite Element Methods with Weak
Symmetry</span></font><span style="mso-tab-count:1"><font class="Apple-style-span" face="Helvetica" size="3"><span class="Apple-style-span" style="font-size: 12px;"> </span></font> </span></span></div><!--StartFragment--><div><br class="webkit-block-placeholder"></div><div>Abstract: We consider small
deformations of a viscoelastic medium in the quasi-static equilibrium. The
basic Maxwell and Kelvin-Voigt models are given special attention. We discuss a
mixed finite element method based on a stress-displacement formulation of the
underlying elastic structure. Particular emphasis will be put on a formulation
enforcing the symmetry of the stress tensor weakly. We demonstrate how this
approach gives a unified, robust and flexible method for the generalized models
for linear viscoelasticity, before concluding with a demonstration of
convergence rates and other numerical experiments.</div><!--StartFragment--><p class="MsoNormal" style="mso-pagination:none;mso-layout-grid-align:none;
text-autospace:none"><span style="">Joint work with Professor Ragnar Winther,
CMA, and Professor Hans Petter Langtangen, Simula Research Laboratory.</span></p><p class="MsoNormal">---------------------------------------------------------</p><p class="MsoNormal">Host:<span class="Apple-tab-span" style="white-space: pre; "> </span>Ridg Scott and Todd Dupont</p></body></html>