Results 21 to 30 of about 49,441 (301)

A gradient theory based on the Aifantis theory using the Gurtin-Anand strain gradient plasticity approach

open access: yesJournal 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.
doaj   +1 more source

Bending of Functionally Graded Sandwich Nanoplates Resting on ‎Pasternak Foundation under Different Boundary Conditions [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2020
This article proposes a refined higher order nonlocal strain gradient theory for stresses and deflections of new model of functionally graded (FG) sandwich nanoplates resting on Pasternak elastic foundation.
Ahmed A. Daikh, Ashraf M. Zenkour
doaj   +1 more source

An approach to nonlinear viscoelasticity via metric gradient flows [PDF]

open access: yes, 2013
We formulate quasistatic nonlinear finite-strain viscoelasticity of rate type as a gradient system. Our focus is on nonlinear dissipation functionals and distances that are related to metrics on weak diffeomorphisms and that ensure time-dependent frame ...
Mielke, A.   +4 more
core   +1 more source

Stress analysis of rotational shaft with a constant angular speed using strain gradient theory [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2012
In classical mechanics, considering Hook’s law stress is a linear function of strain. While in strain gradient theory stress is a function of strain and strain differentials.
mostafa homayouni
doaj  

Size-Dependent Buckling Analysis of Microbeams by an Analytical Solution and Isogeometric Analysis

open access: yesCrystals, 2022
This paper proposes an analytical solution and isogeometric analysis numerical approach for buckling analysis of size-dependent beams based on a reformulated strain gradient elasticity theory (RSGET).
Shuohui Yin   +4 more
doaj   +1 more source

Non-Conventional Thermodynamics and Models of Gradient Elasticity

open access: yesEntropy, 2018
We consider material bodies exhibiting a response function for free energy, which depends on both the strain and its gradient. Toupin–Mindlin’s gradient elasticity is characterized by Cauchy stress tensors, which are given by space-like Euler–Lagrange ...
Hans-Dieter Alber   +3 more
doaj   +1 more source

Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields

open access: yesSensors, 2023
Mastering the strain transfer mechanism in distributed fiber optic (DFO) sensors holds the key to analyzing strain measurement errors from DFO sensing systems.
Wenbo Du   +7 more
doaj   +1 more source

Determination of the Appropriate Gradient Elasticity Theory for Bending Analysis of Nano-beams by Considering Boundary Conditions Effect

open access: yesLatin American Journal of Solids and Structures
In the present paper, a critique study on some models available in the literature for bending analysis of nano-beams using the gradient elasticity theory is accomplished.
Mahmood Mehrdad Shokrieh, Iman Zibaei
doaj   +1 more source

Strain gradient and electric field gradient effects in piezoelectric cantilever beams

open access: yesJournal 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

A theory of strain-gradient plasticity with effect of internal microforce [PDF]

open access: yesTheoretical and Applied Mechanics, 2017
This paper develops a theory of strain gradient plasticity for isotropic bodies undergoing small deformation in the absence of plastic spin. The proposed theory is based on a system of microstresses which include a microstress vector consistent with ...
Borokinni Adebowale   +2 more
doaj   +1 more source

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