Results 41 to 50 of about 10,260 (202)

On the mechanics of FG nanobeams: A review with numerical analysis

Forces in Mechanics, 2023
Since the classical continuum theories are insufficient to account the small size effects of nanobeams, the nonlocal continuum theories such as Eringen's nonlocal elasticity theory, couple stress theory, strain gradient theory and surface elasticity ...
Atteshamuddin S. Sayyad, Lazreg Hadji, Abdelouahed Tounsi   +2 more
doaj   +1 more source

Axial and Torsional Free Vibrations of Elastic Nano-Beams by Stress-Driven Two-Phase Elasticity [PDF]

Journal of Applied and Computational Mechanics, 2019
Size-dependent longitudinal and torsional vibrations of nano-beams are examined by two-phase mixture integral elasticity. A new and efficient elastodynamic model is conceived by convexly combining the local phase with strain- and stress-driven purely ...
Andrea Apuzzo, Raffaele Barretta, Francesco Fabbrocino, S. Ali Faghidian, Raimondo Luciano, Francesco Marotti de Sciarra   +5 more
doaj   +1 more source

On Dislocations in a Special Class of Generalized Elasticity

, 2005
In this paper we consider and compare special classes of static theories of gradient elasticity, nonlocal elasticity, gradient micropolar elasticity and nonlocal micropolar elasticity with only one gradient coefficient.
Aifantis, Aifantis, Aifantis, Aifantis, Altan, Ari, Carlson, DeWit, Eringen, Eringen, Eringen, Eringen, Eringen, Eringen, Eringen, Eringen, Green, Green, Gutkin, Gutkin, Gutkin, Gutkin, Gutkin, Kessel, Knésl, Kröner, Kröner, Kröner, Kröner, Kunin, Lazar, Lazar, Lazar, Lazar, Lazar, Minagawa, Minagawa, Mindlin, Mindlin, Mindlin, Mindlin, Nowacki, Nowacki, Povstenko, Povstenko, Povstenko, Povstenko, Povstenko, Povstenko, Ru, Schaefer, Zubov   +51 more
core   +1 more source

On the plastic buckling of curved carbon nanotubes

Theoretical and Applied Mechanics Letters, 2020
This research, for the first time, predicts theoretically static stability response of a curved carbon nanotube (CCNT) under an elastoplastic behavior with several boundary conditions. The CCNT is exposed to axial compressive loads.
Mohammad Malikan
doaj   +1 more source

Nonsingular stress and strain fields of dislocations and disclinations in first strain gradient elasticity

, 2005
The aim of this paper is to study the elastic stress and strain fields of dislocations and disclinations in the framework of Mindlin's gradient elasticity.
Lazar, Markus, Maugin, Gerard A.
core   +1 more source

Non-linear elastic effects in phase field crystal and amplitude equations: Comparison to ab initio simulations of bcc metals and graphene [PDF]

, 2016
We investigate non-linear elastic deformations in the phase field crystal model and derived amplitude equations formulations. Two sources of non-linearity are found, one of them based on geometric non-linearity expressed through a finite strain tensor ...
Friák, M., Goldenfeld, N., Hüter, C., Neugebauer, J., Spatschek, R., Svendsen, B., Weikamp, M.   +6 more
core   +2 more sources

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

Latin 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

Nonlinear Analyses of Porous Functionally Graded Sandwich Piezoelectric Nano-Energy Harvesters under Compressive Axial Loading

Applied Sciences, 2021
In this study, a sandwich piezoelectric nano-energy harvester model under compressive axial loading with a core layer fabricated of functionally graded (FG) porous material is presented based on the nonlocal strain gradient theory (NSGT).
Shan Zeng, Zhangtao Peng, Kaifa Wang, Baolin Wang, Jinwu Wu, Tianxi Luo   +5 more
doaj   +1 more source

Thermodynamic Approach to Generalized Continua

, 2013
Governing equations of dissipative generalized solid mechanics are derived by thermodynamic methods in the Piola-Kirchhoff framework using the Liu procedure. The isotropic small strain case is investigated in more detail.
Berezovski, A., Papenfuss, C., Ván, P.
core   +1 more source

Size-dependent electromechanical properties in piezoelectric superlattices due to flexoelectric effect

Theoretical and Applied Mechanics Letters, 2017
Piezoelectric superlattice is a potential component for nanoelectromechanical systems. Due to the strong nonlocal effect such as flexoelectric effect at interfaces, classical piezoelectric theory is unable to accurately describe the electromechanical ...
Chang Liu, Jie Wang
doaj   +1 more source