PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Hope Shaffer, Chun Liu.

Title:Blended Atomistic/Continuum Hybrid Methods for crystalline materials
Seminar:Computational and Applied Mathematics Colloquium
Speaker:Xingjie Li, Brown University (C Liu/X Li)
Abstract:
We consider two prototypical atomistic-to-continuum coupling methods of blending type: the energy-based and the force-based quasicontinuum methods, with a comprehensive error analysis that is valid in two and three dimensions, for finite many-body interactions (e.g., EAM type), and in the presence of lattice defects (point defects and dislocations). Based on a precise choice of blending mechanism, the error estimates are considered in terms of degrees of freedom. The numerical experiments confirm the theoretical predictions, and demonstrate a superior accuracy of the force-based blending over energy-based blending schemes.

Room Reservation Information

Room Number:MB106
Date:09 / 29 / 2014
Time:02:30pm - 03:30pm