Matematik Mühendisliği

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http://hdl.handle.net/11527/18049

Gözat

Yazar "Ahmetolan, Semra" ile Matematik Mühendisliği'a göz atma
  • Öge
    SH waves in a weakly inhomogeneous half space with a nonlinear thin layer coating
    (Springer, 2024) Ahmetolan, Semra ; Demirci, Ali ; Peker-Dobie, Ayşe ; Özdemir, Neşe ; 0000-0003-1003-7918 ; 0000-0002-5228-7694 ; 0000-0002-9144-5691 ; Matematik Mühendisliği
    We investigate the self-modulation of Love waves propagating in a nonlinear half-space covered by a nonlinear layer. We assume that the constituent material of the layer is nonlinear, homogeneous, isotropic, compressible, and hyperelastic, whereas for the half-space, it is nonlinear, heterogeneous, compressible and a different hyperelastic material. By employing the nonlinear thin layer approximation, the problem of wave propagation in a layered half-space is reduced to the one for a nonlinear heterogeneous half-space with a modified nonlinear homogeneous boundary condition on the top surface. This new problem is analyzed by a relevant perturbation method, and a nonlinear Schrödinger (NLS) equation defining the self-modulation of waves asymptotically is obtained. The dispersion relation is derived for different heterogeneous properties of the half-space and the thin layer. Then the results of the thin layer approximation are compared with the ones for the finite layer obtained in Teymur et al. (Int J Eng Sci 85:150–162, 2014). The solitary solutions of the derived NLS equation are obtained for selected real material models. It has been discussed how these solutions are influenced by the heterogeneity of the semi-infinite space.