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DISCRETE HUYGENS' MODELLING APPROACH TO WAVE PROPAGATIONS IN A HOMOGENEOUS ELASTIC FIELD

✍ Scribed by Y. KAGAWA; T. FUJITANI; Y. FUJITA; L. CHAI; N. WAKATSUKI; T. TSUCHIYA

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
535 KB
Volume
255
Category
Article
ISSN
0022-460X

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✦ Synopsis

The application of the discrete Huygens' modelling has been discussed for acoustic wave propagation problems, in which the scalar wave "eld problems have been focused. The present paper extends the application of the modelling to the elastic wave propagation in a homogeneous elastic medium in which two types of waves, the longitudinal wave and the shear wave, are independent except at the boundary. Each wave can be treated like a scalar wave until the two waves reach the boundary where they couple so as to satisfy the displacement or stress boundary condition. We propose the approach con"ning ourselves to the two-dimensional "eld. Some examples are demonstrated, whose solutions are compared with the vectorial wave modelling and "nite di!erence modelling solutions whenever they are available.

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