Diffraction of a plane pulse by a semi-infinite barrier at a fluid-solid interface

L. B. Freund, J. D. Achenbach

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Transient diffraction of a plane, diiatational pulse of arbitrary shape is considered. The diffracting surface is a smooth, rigid barrier separating a semi-infinite elastic solid and a semi-infinite ideal fluid over half of the common boundary. The problem is solved by the Wiener-Hopf technique, in conjunction with a superposition principle and a version of Cagniard's method. Real integral expressions are obtained for the displacement potentials in the solid and in the fluid. For an incident displacement impulse, closed-form expressions are derived for the displacement field. For this case, the displacements at the solid-fluid interface are shown in graphs and are compared with the corresponding surface displacements when the fluid is absent.

Original languageEnglish (US)
Pages (from-to)571-578
Number of pages8
JournalJournal of Applied Mechanics, Transactions ASME
Issue number3
StatePublished - 1964
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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