Search results for: SURFACE STRESSES - Bridge of Knowledge

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Search results for: SURFACE STRESSES

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Search results for: SURFACE STRESSES

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Search results for: SURFACE STRESSES

  • Bending of a Three-Layered Plate with Surface Stresses

    Publication

    - Year 2018

    We discuss here the bending deformations of a three-layered plate taking into account surface and interfacial stresses. The first-order shear deformation plate theory and the Gurtin-Murdoch model of surface stresses will be considered and the formulae for stiffness parameters of the plate are derived. Their dependence on surface elastic moduli will be analyzed.

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  • On stress singularity near the tip of a crack with surface stresses

    Publication

    - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Year 2020

    In the framework of the simplified linear Gurtin–Murdoch surface elasticity we discuss a singularity of stresses and displacements in the vicinity of a mode III crack. We show that inhomogeneity in surface elastic properties may significantly affect the solution and to change the order of singularity. We also demonstrate that implicitly or explicitly assumed symmetry of the problem may also lead to changes in solutions. Considering...

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  • On Nonlinear Dynamic Theory of Thin Plates with Surface Stresses

    Publication

    - Year 2019

    We discuss the modelling of dynamics of thin plates considering surface stresses according to Gurtin–Murdoch surface elasticity. Taking into account the surface mass density we derive the two-dimensional (2D) equations of motion. For the reduction of the three-dimensional (3D) motion equations to the 2D ones we use the trough-the-thickness integration procedure. As a result, the 2D dynamic parameters of the plate depend not only...

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  • Comparison of anti-plane surface waves in strain-gradient materials and materials with surface stresses

    Publication

    - MATHEMATICS AND MECHANICS OF SOLIDS - Year 2019

    Here we discuss the similarities and differences in anti-plane surface wave propagation in an elastic half-space within the framework of the theories of Gurtin–Murdoch surface elasticity and Toupin–Mindlin strain-gradient elasticity. The qualitative behaviour of the dispersion curves and the decay of the obtained solutions are quite similar. On the other hand, we show that the solutions relating to the surface elasticity model...

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  • Microstructure and residual stresses in surface coatings with PTFE reservoirs

    Publication

    - TRIBOLOGY LETTERS - Year 2013

    The paper presents the results of experimental study into the microstructure and changes in residual stresses resulting from sliding and rolling/sliding loaded interaction between metallic surface coatings with embedded PTFE reservoirs and various counter faces. It was found that before testing surface coatings had compressive residual stresses. Molybdenum coating with all types of PTFE reservoirs displayed, as a result of testing,...

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