CSE/CSAR Seminar
SPEAKER: Richard B. Lehoucq, Sandia National Laboratories
TITLE: Multilevel Methods for Eigenspace Computations in Structural
Dynamics
DATE: Wednesday, November 9, 2005
TIME: 12:00 Noon
PLACE: 2240 DCL
1304 W. Springfield Ave., Urbana, IL
ABSTRACT
Modal analysis of three-dimensional structures frequently involves
finite element discretizations with millions of unknowns and requires
computing hundreds or thousands of eigenpairs. In this presentation we
review methods based on domain decomposition for such eigenspace
computations in structural dynamics. We distinguish approaches that
solve the eigenproblem algebraically (with minimal connections to the
underlying partial differential equation) from approaches that tightly
couple the eigensolver with the partial differential equation.
This presentation represents joint work with Ulrich Hetmaniuk.
BIOGRAPHY
Rich Lehoucq is a Principal Member of Technical Staff at Sandia
National Laboratories. His research specialty is numerical linear
algebra, in particular eigenvalue problems (ARPACK/AMLS). In addition,
he works on multiscale modeling, finite element methods, molecular
dynamics, and methods for computing the density matrix in electronic
structure calculations.