Elastic surface waves guided by the edge of a slit

J. D. Achenbach*, A. K. Gautesen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Surface waves propagating along the free surface of a homogeneous, isotropic, linearly elastic half-space, are shown to have the property that the normal displacement component at the free surface is governed by a reduced wave equation. This suggests a "membrane analogy", and a corresponding family of surface waves. Of particular interest is a three-dimensional surface wave, whose displacement components in the sagittal plane vary linearly with the co-ordinate normal to that plane, while the displacement component in the direction normal to the sagittal plane is uniform in that direction. This new wave arises when surface waves propagate along the free surfaces of a semi-infinite slit, parallel to the edge of the slit, with the classical Rayleigh wave velocity. It is also shown that a semi-infinite slit cannot support surface waves which decay with the distance from the edge of the slit.

Original languageEnglish (US)
Pages (from-to)407-416
Number of pages10
JournalJournal of Sound and Vibration
Issue number3
StatePublished - Aug 8 1977

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering


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