Results 41 to 50 of about 435,912 (264)

Higher order nonlocal strain gradient approach for wave characteristics of carbon nanorod

Nonlinear Analysis, 2014
In this paper an attempt is made to study the wave dispersion characteristics of a carbon nanorod through second, fourth, sixth and eighth order nonlocal strain gradient models. Expressions are derived for both wave number and wave speeds of the nanorod.
Bolledla Yakaiah, Apparasu Srihari Rao
doaj   +1 more source

On Representing Strain Gradient Elastic Solutions of Boundary Value Problems by Encompassing the Classical Elastic Solution

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, Theodore Gortsas, Demosthenes Polyzos   +2 more
doaj   +1 more source

The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal [PDF]

Metallurgical and Materials Transactions A, 2017
Gradient-structured metals have been reported to possess superior mechanical properties, which were attributed to their mechanical heterogeneity. Here we report in-situ observation of the evolution of strain gradient and anisotropy during tensile testing of a gradient-structured metal.
Xiangde Bian, Fuping Yuan, Xiaolei Wu, Yuntian Zhu   +3 more
openaire   +1 more source

Perspective on hetero-deformation induced (HDI) hardening and back stress

Materials Research Letters, 2019
Heterostructured materials have been reported as a new class of materials with superior mechanical properties, which was attributed to the development of back stress.
Yuntian Zhu, Xiaolei Wu
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Nonlocal-Strain-Gradient-Based Anisotropic Elastic Shell Model for Vibrational Analysis of Single-Walled Carbon Nanotubes

C
In this study, a new anisotropic elastic shell model with a nonlocal strain gradient is developed to investigate the vibrations of simply supported single-walled carbon nanotubes (SWCNTs).
Matteo Strozzi, Isaac E. Elishakoff, Michele Bochicchio, Marco Cocconcelli, Riccardo Rubini, Enrico Radi   +5 more
doaj   +1 more source

Strain gradient and electric field gradient effects in piezoelectric cantilever beams

Journal of the Mechanical Behavior of Materials, 2015
A piezoelectric beam model with strain gradient and electric gradient effects is proposed. An energy variational principle with strain, strain gradient, electric field, and electric field gradient considered as independent variables is postulated to ...
Yue Yanmei, Xu Kaiyu, Aifantis Elias C.
doaj   +1 more source

Investigating Elastic Deformation of Ordered Precipitates by Ab Initio-Informed Phase-Field Crystal Modeling

Metals
Ni-based superalloys, essential for high-temperature applications, derive strength from coherent second-order precipitates that impede dislocation motion through coherency misfit and elastic mismatch.
Jacob Holmberg-Kasa, Pär A. T. Olsson, Martin Fisk   +2 more
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Investigation of continuum damage mechanics model without element size sensitivity

Nihon Kikai Gakkai ronbunshu, 2017
A discontinuous material behavior such as ductile fracture and fatigue failure is predicted actively in various fields by FEM. There is continuum damage mechanics as a method to evaluate the discontinuous material behavior in a framework of continuum ...
Satoshi HIROSE, Yutaka TOI
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Localization properties of strain-softening gradient plasticity models. Part I: Strain-gradient theories

International Journal of Solids and Structures, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jirásek, Milan, Rolshoven, Simon
openaire   +2 more sources

A Review on Heterogeneous Nanostructures: A Strategy for Superior Mechanical Properties in Metals

Metals, 2019
Generally, strength and ductility are mutually exclusive in homogeneous metals. Nanostructured metals can have much higher strength when compared to their coarse-grained counterparts, while simple microstructure refinement to nanoscale generally results ...
Yan Ma, Muxin Yang, Fuping Yuan, Xiaolei Wu   +3 more
doaj   +1 more source