Results 81 to 90 of about 796 (182)

Nonlinear Vibration of a Functionally Graded Nanobeam Based on the Nonlocal Strain Gradient Theory considering Thickness Effect

Advances in Civil Engineering, 2020
In this work, a nonlocal strain gradient beam model considering the thickness effect is developed to study the nonlinear vibration response of a functionally graded nanobeam.
Dang-Van Hieu, The-Hung Duong, Gia-Phi Bui   +2 more
doaj   +1 more source

Post-critical buckling of truncated conical carbon nanotubes considering surface effects embedding in a nonlinear Winkler substrate using the Rayleigh-Ritz method

Materials Research Express, 2020
This research predicts theoretically post-critical axial buckling behavior of truncated conical carbon nanotubes (CCNTs) with several boundary conditions by assuming a nonlinear Winkler matrix.
Mohammad Malikan, Victor A Eremeyev
doaj   +1 more source

Fractional nonlocal strain-gradient isogeometric analysis of porous functionally graded piezoelectric microplates resting on elastic substrates

African Scientific Reports
Existing strain-gradient models for piezoelectric microplates often capture local microstructural size effects but do not simultaneously represent long-range spatial interactions, porosity-induced material degradation, electromechanical coupling, and ...
Sule Adekunle Jimoh, Olorunsola Oriola Niyi, Adebola Samuel Adeoye, Daramola Oluwatosin Bunmi, Ezekiel Olaoluwa Omole   +4 more
doaj   +1 more source

Mathematical Modeling on Weakened Thermomagnetic Nanobeam Based on the Nonlocal Strain Gradient Theory

Contemporary Mathematics
In this research paper, the focus is on analyzing the free lateral vibration of a nanobeam that has been weakened. The investigation revolves around studying the impact of thermal and magnetic effects on the nanobeam, utilizing both Bernoulli's beam theory and the nonlocal strain gradient theory (NSGT).
Mohammadreza Eghbali, Seyed Amirhosein Hosseini, Mahdi Keshtkar   +2 more
openaire   +1 more source

Physics-Informed Neural Network for Nonlinear Bending Analysis of Nano-Beams: A Systematic Hyperparameter Optimization

Mathematical and Computational Applications
This paper investigates the nonlinear bending analysis of nano-beams using the physics-informed neural network (PINN) method. The nonlinear governing equations for the bending of size-dependent nano-beams are derived from Hamilton’s principle ...
Saba Sadat Mirsadeghi Esfahani, Ali Fallah, Mohammad Mohammadi Aghdam   +2 more
doaj   +1 more source

Flexural Eigenfrequency Analysis of Healthy and Pathological Tissues Using Machine Learning and Nonlocal Viscoelasticity

Computers
Biomechanical characteristics can be used to assist the early detection of many diseases, including breast cancer, thyroid nodules, prostate cancer, liver fibrosis, ovarian diseases, and tendon disorders.
Ali Farajpour, Wendy V. Ingman
doaj   +1 more source

The Nonlinear Bending of Sector Nanoplate via Higher-Order Shear Deformation Theory and Nonlocal Strain Gradient Theory

Mathematics
In this context, the nonlinear bending investigation of a sector nanoplate on the elastic foundation is carried out with the aid of the nonlocal strain gradient theory. The governing relations of the graphene plate are derived based on the higher-order shear deformation theory (HSDT) and considering von Karman nonlinear strains.
Sadeghian, Mostafa, Jamil, Asif, Palevicius, Arvydas, Janusas, Giedrius, Naginevičius, Vytenis   +4 more
openaire   +3 more sources

A Review of Theories and Numerical Methods in Nanomechanics for the Analysis of Nanostructures

Mathematics
Nanostructures, such as carbon nanotubes (CNTs), graphene, nanoplates, etc., show behaviors that classical continuum theories cannot capture. At the nanoscale, size effects, surface stresses, and nonlocal interactions become important, so new models are ...
Mostafa Sadeghian, Arvydas Palevicius, Giedrius Janusas   +2 more
doaj   +1 more source

Magneto-Hygrothermal Deformation of FG Nanocomposite Annular Sandwich Nanoplates with Porous Core Using the DQM

Crystals
This study introduces a novel numerical approach to analyze the axisymmetric bending behavior of functionally graded (FG) graphene platelet (GPL)-reinforced annular sandwich nanoplates featuring a porous core.
Fatemah H. H. Al Mukahal, Mohammed Sobhy, Aamna H. K. Al-Ali   +2 more
doaj   +1 more source

A Refined Nonlocal Strain Gradient Theory For Assessing Scaling-Dependent Vibration Behavior Of Microbeams

, 2017
{"references": ["L. Li, Y. Hu, and L. Ling, \"Flexural wave propagation in small-scaled\nfunctionally graded beams via a nonlocal strain gradient theory,\"\nComposite Structures, vol. 133, pp. 1079\u20131092, 2015.", "L. Li, Y. Hu, and L. Ling, \"Wave propagation in viscoelastic\nsingle-walled carbon nanotubes with surface effect under magnetic field ...
Xiaobai Li, Li, Li, Hu, Yujin, Weiming Deng, Ding, Zhe   +4 more
openaire   +2 more sources