The near-resonant regimes of a moving load in a three-dimensional problem for a coated elastic half-space
MATHEMATICS AND MECHANICS OF SOLIDS, cilt.22, sa.1, ss.89-100, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 22 Sayı: 1
- Basım Tarihi: 2017
- Doi Numarası: 10.1177/1081286514555451
- Dergi Adı: MATHEMATICS AND MECHANICS OF SOLIDS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.89-100
- Anahtar Kelimeler: 3D elasticity, moving load, Rayleigh wave, thin coating, uniform asymptotics, SURFACE, WAVES, MODEL
- Anadolu Üniversitesi Adresli: Evet
Özet
This paper deals with the three-dimensional analysis of the near-resonant regimes of a point load, moving steadily along the surface of a coated elastic half-space. The approach developed relies on a specialized hyperbolic-elliptic formulation for the wave field, established earlier by the authors. Straightforward integral solutions of the two-dimensional perturbed wave equation describing wave propagation along the surface are derived along with their far-field asymptotic expansions obtained using the uniform stationary phase method. Both sub-Rayleigh and super-Rayleigh cases are studied. It is shown that the singularities arising at the contour of the Mach cones typical of the super-Rayleigh case, are smoothed due to the dispersive effect of the coating.