نتایج جستجو برای: Nonlocal theory

تعداد نتایج: 792620  

Journal: :international journal of nano dimension 0
a. tourki samaei young researchers club, chalous branch, islamic azad university, chalous, iran. sh. hosseini hashemi school of mechanical engineering, iran university of science and technology, tehran 16844, iran.

this paper proposed analytical solutions for the buckling analysis of rectangular single-layered graphene sheets under in-plane loading on all edges simply is supported. the characteristic equations of the graphene sheets are derived and the analysis formula is based on the nonlocal mindlin plate. this theory is considering both the small length scale effects and transverse shear deformation ef...

R Pilafkan, S.F Asbaghian Namin

This paper addresses the influence of boundary conditions and small-scale effect on the free vibration of nano-plates using molecular dynamics (MD) and nonlocal elasticity theory. Based on the MD simulations, Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) is used to obtain fundamental frequencies of single layered graphene sheets (SLGSs) which modeled in this paper as the mo...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده فنی و مهندسی 1389

در این رساله، کمانش نانو لوله های کربنی با استفاده از تئوری الاستیسیته غیر محلی (nonlocal elasticity theory) مورد بررسی قرار می گیرد. در ابتدا، کمانش الاستیک نانو لوله کربنی دوجداره بر بستر الاستیک تحت فشار محوری با استفاده از تئوری تیر تیموشنکو غیر محلی (nonlocal timoshenko beam theory) مطالعه می گردد. تاثیرات محیط الاستیک، نیروی واندروالس بین نانو لوله های داخلی و خارجی و اثر مقیاس کوچک بر اس...

Journal: :journal of computational applied mechanics 0
naser kordani university of mazandaran [email protected] abdolhossein fereidoon university of semnan mehdi divsalar semnan university ali farajpour department of mechanical engineering, college of engineering, university of tehran, tehran, iran

in this paper, a numerical solution procedure is presented for the forced vibration of a piezoelectric nanowire under thermo-electro-mechanical loads based on the nonlocal elasticity theory within the framework of timoshenko beam theory. using hamilton’s principle, the nonlocal governing differential equations are derived. the governing equations and the related boundary conditions are discreti...

Journal: :international journal of nano dimension 0
t. j. prasanna kumar department of aerospace engineering, pvp siddartha engineering college, vijayawada 520 007, india. s. narendar defence research and development laboratory, kanchanbagh, hyderabad 500 058, india. b. l. v. s. gupta department of aerospace engineering, pvp siddartha engineering college, vijayawada 520 007, india. s. gopalakrishnan 4computational wave mechanics laboratory, department of aerospace engineering, indian institute of science, bangalore 560 012, india.

this paper presents the thermal vibration analysis of double-layer graphene sheet embedded in polymer elastic medium, using the plate theory and nonlocal continuum mechanics for small scale effects. the graphene is modeled based on continuum plate theory and the axial stress caused by the thermal effects is also considered. nonlocal governing equations of motion for this double-layer graphene s...

Journal: :journal of computational applied mechanics 0
ali ghorbanpour arani professor, faculty of mechanical engineering, university of kashan, kashan, iran abdolhosein fereidoon professor, department of mechanical engineering, faculty of engineering, university of semnan, semnan, iran reza kolahchi ph.d. candidate, faculty of mechanical engineering, university of kashan, kashan, iran

the nonlocal nonlinear buckling of a double layer graphene sheet (dlgs) covered by zinc oxide (zno) piezoelectric layers is investigated in this study. the surrounding circumstances of the system are considered as a pasternak foundation including spring constants and a shear layer. graphene sheets are subjected to longitudinal magnetic field and biaxial forces. on the other hand, the zno piezoe...

In this article thermoelastic damping in nano-beam resonators is investigated based on nonlocal theory of elasticity and the Euler-Bernoulli beam assumptions. The governing equation of deflection of the beam is obtained from shear and moment resultants and stress–strain relationship of the nonlocal elasticity model and also the governing equations of thermoelastic damping are established by usi...

A. Tourki Samaei, Sh. Hosseini Hashemi

This paper proposed analytical solutions for the buckling analysis of rectangular single-layered graphene sheets under in-plane loading on all edges simply is supported. The characteristic equations of the graphene sheets are derived and the analysis formula is based on the nonlocal Mindlin plate. This theory is considering both the small length scale effects and transverse shear deformation ef...

A. Tourki Samaei, Sh. Hosseini Hashemi

This paper proposed analytical solutions for the buckling analysis of rectangular single-layered graphene sheets under in-plane loading on all edges simply is supported. The characteristic equations of the graphene sheets are derived and the analysis formula is based on the nonlocal Mindlin plate. This theory is considering both the small length scale effects and transverse shear deformation ef...

Journal: :iranian journal of science and technology (sciences) 2015
qing-tian deng

functionally gradedpoisson’s ratio structures have been developed for critical protection. in thispaper, the static bending and buckling of fgpr nanoscale beam are studied basedon the nonlocal timoshenko beam model, in which both young’s modulus andpoisson’s ratio are assumed to vary continuously in the thickness direction. byutilizing total potential energy principle, equilibrium equations are...

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