Results 31 to 40 of about 796 (182)

Damped forced vibration analysis of single-walled carbon nanotubes resting on viscoelastic foundation in thermal environment using nonlocal strain gradient theory

Engineering Science and Technology, an International Journal, 2018
In this paper, the damped forced vibration of single-walled carbon nanotubes (SWCNTs) is analyzed using a new shear deformation beam theory. The SWCNTs are modeled as a flexible beam on the viscoelastic foundation embedded in the thermal environment and ...
Mohammad Malikan, Van Bac Nguyen, Francesco Tornabene   +2 more
doaj   +1 more source

Nonlinear Thermal/Mechanical Buckling of Orthotropic Annular/Circular Nanoplate with the Nonlocal Strain Gradient Model

Micromachines, 2023
This article presents the nonlinear investigation of the thermal and mechanical buckling of orthotropic annular/circular single-layer/bilayer nanoplate with the Pasternak and Winkler elastic foundations based on the nonlocal strain gradient theory.
Mostafa Sadeghian, Arvydas Palevicius, Giedrius Janusas   +2 more
doaj   +1 more source

Nonlocal strain gradient theory for bending, buckling, and vibration of viscoelastic functionally graded curved nanobeam embedded in an elastic medium

Advances in Mechanical Engineering, 2019
This article investigates bending, buckling, and vibration analysis in viscoelastic functionally graded curved nanobeam embedded in an elastic medium under different boundary conditions.
Mohamed NM Allam, Ahmed F Radwan
doaj   +1 more source

Nonlocal State-Space Strain Gradient Approach to the Vibration of Piezoelectric Functionally Graded Nanobeam

Engineering Transactions, 2022
In this work, the state-space nonlocal strain gradient theory is used for the vibration analysis of piezoelectric functionally graded material (FGM) nanobeam.
Rajendran SELVAMANI, Rubine LOGANATHAN, Farzad EBRAHIMI   +2 more
doaj   +1 more source

A Nonlocal Strain Gradient Approach for Out-of-Plane Vibration of Axially Moving Functionally Graded Nanoplates in a Hygrothermal Environment

Shock and Vibration, 2021
Vibration analyses on axially moving functionally graded nanoplates exposed to hygrothermal environments are presented. The theoretical model of the nanoplate is described via the Kirchhoff plate theory in conjunction with the concept of the physical ...
Chengxiu Zhu, Jianwei Yan, Pingyuan Wang, Cheng Li   +3 more
doaj   +1 more source

Dynamic Analysis of a Piezoelectrically Layered Perforated Nonlocal Strain Gradient Nanobeam with Flexoelectricity

Mathematics, 2022
This study presents a mathematical size-dependent model capable of investigating the dynamic behavior of a sandwich perforated nanobeam incorporating the flexoelectricity effect.
Ammar Melaibari, Alaa A. Abdelrahman, Mostafa A. Hamed, Ahmed W. Abdalla, Mohamed A. Eltaher   +4 more
doaj   +1 more source

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

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

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

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