MULTIPLE DIFFRACTION OF PLANE-WAVES BY AN ACOUSTICALLY PENETRABLE STRIP LOCATED BETWEEN 2 SOFT HARD HALF-PLANES


BUYUKAKSOY A., ALKUMRU A.

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, cilt.32, sa.5, ss.779-789, 1994 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Konu: 5
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1016/0020-7225(94)90060-4
  • Dergi Adı: INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
  • Sayfa Sayıları: ss.779-789

Özet

A uniform asymptotic high-frequency solution is developed for the diffraction of plane waves ? by an acoustically transmissive strip located between two half-planes which are soft at the top and ?hard at the bottom. After simulating the partially transmissive strip by a set of approximate boundary ?conditions used recently by Rawlins et al., the three-part boundary value problem is formulated into ?a ''modified matrix Wiener-Hopf equation''. By performing the factorization of the kernel matrix ?through the Daniele-Khrapkov method, the modified matrix Wiener-Hopf equation is first reduced ?to a pair of coupled Fredholm integral equations of the second kind and then solved by iterations. An ?interesting feature of the present solution is that the classical Wiener-Hopf arguments yield unknown ?constants that can be determined by means of the edge conditions.