Registered Data

[CT134]

  • Session Time & Room
  • Classification
    • CT134 (1/1) : Waves in solid mechanics (74J)

[02528] Propagation of Rayleigh-like surface waves in multilayered nonlocal elastic media

  • Session Time & Room : 5C (Aug.25, 13:20-15:00) @E817 A715
  • Type : Contributed Talk
  • Abstract : Haskell matrix method is employed to derive the dispersion relation of Rayleigh-like surface waves propagating through a multilayered nonlocal elastic solid half-space. This dispersion relation is reduced for a 2-layered model to discuss the characteristics of phase speed of Rayleigh-like wave. For specific model, the effect of nonlocality on Rayleigh-like waves for 2- and 3-layered models has been depicted graphically. The particle motion remains elliptical, and influenced by the presence of nonlocality for 2-layered model.
  • Classification : 74J15
  • Format : Talk at Waseda University
  • Author(s) :
    • Aarti Khurana (Panjab University Chandigarh)

[00637] Wave Scattering from Layers of Random Particulate Materials

  • Session Time & Room : 5C (Aug.25, 13:20-15:00) @E817 A715
  • Type : Contributed Talk
  • Abstract : To characterise any material with sound waves, the wave will propagate through several layers before reaching the material. If that material is a random particulate material, then to date there is no simple model to deal with the layers. In this talk we show how extending the quasi-crystalline approximation (\text{(a technique from statistical physics)}) to layers leads to clear and simple models which separate the influence of the microstructure from the material geometry.
  • Classification : 74J20, 82D30, 45B05
  • Format : Talk at Waseda University
  • Author(s) :
    • Paulo Sergio Piva (The University of Sheffield)
    • Kevish Napal (The University of Sheffield)
    • Artur Gower (The University of Sheffield)

[00844] Evidence of Multiple Effective Wavenumbers in Isotropic Random Particulate Materials

  • Session Time & Room : 5C (Aug.25, 13:20-15:00) @E817 A715
  • Type : Contributed Talk
  • Abstract : In random particulate materials, it is generally assumed that if we average over all particle configurations, the averaged wave field satisfies the wave equation with a unique effective wavenumber k∗. As the medium is homogeneous and isotropic - because the particles have no specific orientation or direction - it is reasonable to assume the presence of one effective wavenumber. However, recent work theoretically predicted the existence of at least two (complex) effective wavenumbers for one fixed frequency. A phenomenon normally observed only in anisotropic media. Our goal is to find clear evidence of these wavenumbers using the Monte-Carlo approach and show how they influence the total field.
  • Classification : 74J20, 74A40, 78A48, 82D30, 82M31, wave scattering, multiple scattering, random media, ensemble averaging, Monte Carlo methods
  • Format : Talk at Waseda University
  • Author(s) :
    • Aristeidis Karnezis (The University of Sheffield)
    • Artur Lewis Gower (The University of Sheffield)

[02548] Rayleigh-like waves in coated elastic half-space containing voids

  • Session Time & Room : 5C (Aug.25, 13:20-15:00) @E817 A715
  • Type : Contributed Talk
  • Abstract : Secular equation for Rayleigh-like surface waves propagating through an isotropic elastic media containing voids coated with a thin isotropic elastic layer with voids is derived. The layer and the half-space are in welded contact. The effective boundary condition method has been employed to obtain an approximate secular equation of second order in terms of the dimensionless thickness of layer. An explicit formula for Rayleigh-like wave speed is derived and the results have been plotted graphically.
  • Classification : 74J15
  • Format : Online Talk on Zoom
  • Author(s) :
    • Savkirat Kaur (Dev Samaj College for Women, Chandigarh)

[00855] Mathematical modelling of edge wave on a functionally graded thermo-poro-elastic plate

  • Session Time & Room : 5C (Aug.25, 13:20-15:00) @E817 A715
  • Type : Contributed Talk
  • Abstract : An analysis of flexural edge waves propagating in a thermally affected poroelastic plate supported by a Pasternak foundation is presented. The Kirchhoff plate theory and Moore-Gibson-Thomson (MGT) thermos elasticity theory are applied to study the displacement field of the plate and temperature distribution on edge wave, respectively. There are seven different porosity models considered to compare the edge wave behavior in different porous structures. The grid dispersion is optimized by applying the FDM to the wave equation. The effects of porosity, temperature, elastic foundation, cutoff-frequency, and wave frequency are investigated numerically.
  • Classification : 74J20, 35L05, 35L53, 86-10, 74S20
  • Author(s) :
    • Santanu Manna (Department of Mathematics, Indian Institute of Technology Indore, Simrol, Khandwa road, Indore-453552, M.P., India)
    • Rahul Som (Department of Mathematics, Indian Institute of Technology Indore, Simrol, Khandwa road, Indore-453552, M.P., India)
    • Tanisha Kumari (Department of Mathematics, Indian Institute of Technology Indore, Simrol, Khandwa road, Indore-453552, M.P., India)