Results 51 to 60 of about 3,870,040 (252)
Strain gradient effects on concrete stress–strain curve [PDF]
Proceedings of the Institution of Civil Engineers - Structures and Buildings, 2012 The stress–strain characteristic of concrete developed in flexure is one of the essential parameters for the ultimate flexural strength design of reinforced concrete (RC) members. Currently, the stress–strain curve of concrete developed in flexure is obtained by scaling down the uniaxial stress–strain curve.
Ho, JCM, Peng, J
openaire +3 more sources
Elastoplasticity of gradient-polyconvex materials [PDF]
, 2020 We propose a model for rate-independent evolution in elastoplastic materials under external loading, which allows large strains. In the setting of strain-gradient plasticity with multiplicative decomposition of the deformation gradient, we prove the existence of the so-called energetic solution.
arxiv +1 more source
Switching a Polar Metal via Strain Gradients [PDF]
Physical Review Letters, 2021 Although rare, spontaneous breakdown of inversion symmetry sometimes occurs in a material which is metallic: these are commonly known as polar metals or ferroelectric metals. Their 'polarization', however, cannot be switched via an electric field, which limits the experimental control over band topology.
Zabalo, Asier, Stengel, Massimiliano
openaire +5 more sources
Flexoelectric materials and their related applications: A focused review
Journal of Advanced Ceramics, 2019 Flexoelectricity refers to the mechanical-electro coupling between strain gradient and electric polarization, and conversely, the electro-mechanical coupling between electric field gradient and mechanical stress. This unique effect shows a promising size
Longlong Shu +5 more
doaj +1 more source
On strain hardening mechanism in gradient nanostructures
International Journal of Plasticity, 2017 AbstractExperiments have shown that a gradient design, in which grain size spans over four orders of magnitude, can make strong nanomaterials ductile. The enhanced ductility is attributed to the considerable strain hardening capability obtained in the gradient metals. A non-uniform deformation on the lateral sample surface is also observed.
Li, Jianjun +3 more
openaire +3 more sources
Analysis of scalar dissipation in terms of vorticity geometry in isotropic turbulence [PDF]
Journal of Turbulence, Taylor \& Francis, 2012, 13, pp.N41, 2016 The mechanisms promoting scalar dissipation through scalar gradient production are scrutinized in terms of vorticity alignment with respect to strain principal axes. For that purpose, a stochastic Lagrangian model for the velocity gradient tensor and the scalar gradient vector is used.
arxiv +1 more source
Mathematics, 2022 The present work aims to primarily provide a general representation of the solution of the simplified elastostatics version of Mindlin’s Form II first-strain gradient elastic theory, which converges to the solution of the corresponding classical elastic ...
Antonios Charalambopoulos +2 more
doaj +1 more source
The strain gradient elasticity via nonlocal considerations [PDF]
arXiv, 2022 Strain gradient elasticity and nonlocal elasticity are two enhanced elastic theories intensively used over the last fifty years to explain static and dynamic phenomena that classical elasticity fails to do. The nonlocal elastic theory has a clear differentiation from the classical case by considering stresses in a point of the continuum as an integral ...
arxiv
Identification of two-dimensional pantographic structure via a linear D4 orthotropic second gradient elastic model [PDF]
, 2016 A linear elastic second gradient orthotropic two-dimensional solid that is invariant under (Formula presented.) rotation and for mirror transformation is considered. Such anisotropy is the most general for pantographic structures that are composed of two
Andreaus, Ugo +2 more
core +1 more source
Journal of Applied Physics, 2020 One-dimensional piezoelectric semiconductor (PSC) nanowires have been widely used in smart structures and devices; however, few theoretical studies on their nano-size effects have been carried out. In this paper, a theoretical analysis of one-dimensional
Ming-gao Zhao +4 more
semanticscholar +1 more source