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    Surface elasticity revisited in the context of second strain gradient theory

    , Article Mechanics of Materials ; Volume 93 , 2016 , Pages 220-237 ; 01676636 (ISSN) Ojaghnezhad, F ; Shodja, H. M ; Sharif University of Technology
    Elsevier 
    Abstract
    Surface/interface stresses, when notable, are closely associated with a surface/interface layer in which the interatomic bond lengths and charge density distribution differ remarkably from those of the bulk. The presence of such topographical defects as edges and corners amplifies the noted phenomena by large amounts. If the principal features of interest are such studies as the physics and mechanics of evolving microscopic-/nanoscopic-interfaces and the behavior of nano-sized structures which have a very large surface-to-volume ratio, traditional continuum theories cease to hold. It is for the treatment of such problems that augmented continuum approaches like second strain gradient and... 

    Surface characterization of face-centered cubic crystals

    , Article Mechanics of Materials ; Volume 129 , 2019 , Pages 15-22 ; 01676636 (ISSN) Shodja, H. M ; Enzevaee, C ; Sharif University of Technology
    Elsevier B.V  2019
    Abstract
    To date, the examination of surface energy and surface layer relaxation has been the subject of several experimental and simulation works, whereas evaluation of surface residual stresses and surface elastic constants has received very little attention. In addition to the fundamental importance of these properties in the understanding of such phenomena as crystal equilibrium shape, surface roughening and segregation, they are also crucial for use in the theoretical studies based on continuum theory of elastic material surfaces. This work focuses on developing a theoretical approach for the calculations of the surface residual stress and surface elastic constants for (100) planes of fcc... 

    Surface characterization of face-centered cubic crystals

    , Article Mechanics of Materials ; Volume 129 , 2019 , Pages 15-22 ; 01676636 (ISSN) Shodja, H. M ; Enzevaee, C ; Sharif University of Technology
    Elsevier B.V  2019
    Abstract
    To date, the examination of surface energy and surface layer relaxation has been the subject of several experimental and simulation works, whereas evaluation of surface residual stresses and surface elastic constants has received very little attention. In addition to the fundamental importance of these properties in the understanding of such phenomena as crystal equilibrium shape, surface roughening and segregation, they are also crucial for use in the theoretical studies based on continuum theory of elastic material surfaces. This work focuses on developing a theoretical approach for the calculations of the surface residual stress and surface elastic constants for (100) planes of fcc...