Results 101 to 110 of about 3,870,040 (252)
Toward steering the motion of surface rolling molecular machines by straining graphene substrate
Scientific Reports, 2023 The surface rolling molecular machines are proposed to perform tasks and carrying molecular payloads on the substrates. As a result, controlling the surface motion of these molecular machines is of interest for the design of nano-transportation systems ...
Mehran Vaezi, Hossein Nejat Pishkenari
doaj +1 more source
A Turbulent Constitutive Law for the Two-Dimensional Inverse Energy Cascade
, 2005 We develop a fundamental approach to a turbulent constitutive law for the 2D inverse cascade, based upon a convergent multi-scale gradient (MSG) expansion.
Eyink, Gregory L.
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Strain gradient and generalized continua obtained by homogenizing frame lattices
Mathematics and Mechanics of Complex Systems, 2018 We determine the effective behavior of periodic structures made of welded elastic bars. Taking into account the fact that flexural and torsional stiffnesses are much smaller than the extensional one we overpass classical homogenization formula and obtain
H. Abdoul-Anziz, P. Seppecher
semanticscholar +1 more source
Solutal gradients in strained equilibrium
Philosophical Magazine Letters, 2013 AbstractWe demonstrate that the distortion of a crystal, caused by secondary phase precipitates, can stabilize a solutal gradient around the precipitate. The gradient persists in the quasi-static state stabilized by the gradient of the elastic energy around the precipitate.
Ingo Steinbach +3 more
openaire +2 more sources
On the consistency of the nonlocal strain gradient elasticity
International Journal of Engineering Science, 2019 The nonlocal strain gradient elasticity theory is being widely used to address structural problems at the micro- and nano-scale, in which size effects cannot be disregarded. The application of this approach to bounded solids shows the necessity to fulfil boundary conditions, derived from an energy variational principle, to achieve equilibrium, as well ...
R. Zaera +2 more
openaire +3 more sources
Journal of the Mechanical Behavior of Materials, 2018 This article investigates the differences between the Aifantis and Gurtin-Anand strain gradient plasticity. The fact that Gurtin-Anand strain gradient plasticity is richer than the Aifantis strain gradient plasticity provides a basis for which we could ...
Borokinni Adebowale S.
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Strain Gradient Plasticity: Theory and Implementation
, 2020 This chapter focuses on the foundation and development of various higher-order strain gradient plasticity theories, and it also provides the basic elements for their finite element implementation. To this aim, we first refer to experiments exhibiting size-effects in metals and explain them by resorting to the concept of geometrically necessary ...
Lorenzo Bardella, Christian F. Niordson
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Distributed non-singular dislocation technique for cracks in strain gradient elasticity
Journal of the Mechanical Behavior of Materials, 2014 The mode III fracture analysis of a cracked graded plane in the framework of classical, first strain gradient, and second strain gradient elasticity is presented in this paper.
Mousavi S. Mahmoud +2 more
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An assessment of higher gradient theories from a continuum mechanics perspective [PDF]
arXiv, 2018 In this paper, we investigate the inherent physical and mathematical character of higher gradient theories, in which the strain or distortion gradients are considered as the fundamental measures of deformation. Contrary to common belief, the first or higher strain or distortion gradients are not proper measures of deformation.
arxiv
Formulation of continuous/discontinuous Galerkin methods for strain gradient-dependent damage [PDF]
, 2006 Continuum damage models are widely used to represent the development of microscopic defects that coalesce into a macroscopic crack. The microscopic defects cause a progressive weakening or softening of the material (damage).
Garikipati, K, Molari, L, Wells, GN
core