Tuesday, June 2

Numerical Modeling for Wave Propagation in Elastic Media

10:15 AM-12:15 PM
Room 242

The numerical modeling of elastic waves (waves propagating in elastic solids) is important in many applications, such as geophysics, non-destructive testing, and fluid-structure interaction. The wide range of applications explains the large number of numerical methods developed in this domain. Currently the most used methods are finite differences, finite elements, spectral methods and boundary elements. The object of this minisymposium is to present recent developments in highly accurate methods (high-order finite elements spectral methods) for solving specific problems such as fluid-structure interaction, propagation in complex media, involving heterogeneities, anisotropy, cracks, and also particular problems linked to the time-domain approximation (mass lumping, adaptive time-space meshes).

Organizers: Eliane Becache and Patrick Joly
INRIA-Rocquencourt, France
10:15 Computation of the Acoustic Wave Diffracted by an Immersed Elastic Wedge
Jean-Pierre Croisille, Universite Paris-XI, France; and Gilles Lebeau, Ecole Polytechnique, France
10:45 Wave Propagation in Complex Media by the Mortar Approximation
Fabio Maggio, CRS4, Italy; and Alfio Quarteroni, Politecnico di Milano, Italy
11:15 Adaptive Strategy for Transient Elastodynamics
Denis Aubry, Damien Lucas, and Bing Tie, LMSSM Ecole Centrale Paris, France
11:45 Fictitious Domain Method Applied to the Scattering by a Crack of Transient Elastic Waves in Anisotropic Media: A New Family of Mixed Finite Elements Leading to Explicit Schemes
Eliane Becache and Patrick Joly, Organizers; and Chrysoula Tsogka, INRIA Rocquencourt, France

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MMD, 4/8/98