Wave Propagation In Elastic And
Poroelastic Media In The Frequency Domain By
The Boundary Element Method
Author(s)
M. A. C. Ferro & W. J. Mansur
Abstract
This work presents a methodology to solve dynamic elastic and poroelastic
problems in the frequency-domain approach, i.e., problems of the propagation of
waves in an elastic and a saturated poroelastic media and the coupling between
them. The methodology presented is concerned mainly with seismic wave
propagation; in one of the examples the stability of a concrete dam is studied.
The formulation of the governing equations for poroelastic isotropic and
saturated media was proposed by Biot in time-domain. Dominguez presented a
formulation in frequency-domain, using the analogy between dynamic
poroelasticity and thermoelasticity. In the present paper the subregion technique,
which is frequently used in the Boundary Element Method, was used to obtain
the coupling between the elastic and poroelastic media. In order to validate the
proposed formulation four examples were analyzed. The obtained numerical
results are compared with the studies of other authors and they were quite good.
Keywords: frequency-domain, elasticity, poroelasticity.
1 Introduction
The analysis of the seismic response of dams and other structures is a very
important problem of interest in geophysics and engineering fields. This subject
is of special interest in geophysics and engineering areas, e.g., soil and rock
mechanics, soil-structure interaction, etc. Wave propagation in isotropic elastic
Keywords
frequency-domain, elasticity, poroelasticity.
Related Book
Other papers in this volume
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