Accession Number:

ADA446529

Title:

Viscoelastic Finite Difference Modeling

Descriptive Note:

Corporate Author:

RICE UNIV HOUSTON TX DEPT OF COMPUTATIONAL AND APPLIED MATHEMATICS

Report Date:

1993-02-01

Pagination or Media Count:

138.0

Abstract:

Real earth media disperse and attenuate propagating waves. This anelastic behavior can be well described by a viscoelastic model. We have developed a finite difference simulator to model wave propagation in viscoelastic media. The finite difference method was chosen in favor of other methods for several reasons. Finite difference codes are more portable than, for instance, pseudo-spectral codes. Moreover, finite difference schemes provide a convenient environment to define complicated boundaries. The finite difference method for viscoelastic wave propagation has been thoroughly investigated with convergence tests, dispersion and stability analyses. Two 2- D examples illustrate the difference between viscoelastic and elastic wave propagation.

Subject Categories:

  • Theoretical Mathematics
  • Mechanics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE