نتایج جستجو برای: Nonlocal static and dynamic response

تعداد نتایج: 17039016  

پایان نامه :موسسه آموزش عالی غیر دولتی و غیرانتفاعی علامه محدث نوری (ره) - پژوهشکده اقتصاد 1393

dynamic assessment according to vygotskys sociocultural theory, states that instruction and assessment are interrelated. using static forms of assessment with second and foreign language students could do more harm than good. many teachers neglect to take account of the complexity involved in learning a second or foreign language and often wonder why learning of a language take so long. thi...

پایان نامه :0 1392

it is definitely necessary to understand the concept and behavior of causation of life insurance policies and its determinants for insurance managers, regulators, and customers. for insurance managers, the profitability and liquidity of insurers can be increasingly influenced by the number of causation through costs, adverse selection, and cash surrender values. therefore, causation is a materi...

A Ghorbanpour Arani, A.A Ghorbanpour Arani M.H Jalaei S Niknejad

This paper discusses static and dynamic response of nanoplate resting on an orthotropic visco-Pasternak foundation based on Eringen’s nonlocal theory. Graphene sheet modeled as nanoplate which is assumed to be orthotropic and viscoelastic. By considering the Mindlin plate theory and viscoelastic Kelvin-Voigt model, equations of motion are derived using Hamilton’s principle which are then solved...

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
r. ansari r. gholami

a nonlocal beam model based on the bernoulli–euler beam theory is presented to investigate the dynamic stability of embedded single-walled carbon nanotubes (swcnts) in thermal environment under combined static and periodic axial loads. the dynamic stability analysis is carried out by including the effects of small-scale parameter, temperature change and elastic medium. the equation of motion is...

Journal: :journal of applied and computational mechanics 0
dario abbondanza dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy daniele battista dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy francescogiuseppe morabito dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy chiara pallante dipartimento di ingegneria meccanica e aeronautica, “la sapienza”, rome, italy raffaele barretta dipartimento di strutture per l’ingegneria e l’architettura, università degli studi di napoli “federico ii”, naples, italy raimondo luciano dipartimento di ingegneria civile e meccanica, università degli studi di cassino e del lazio meridionale, cassino (fr), italy francesco marotti de sciarra

linear dynamic response of simply supported nanobeams subjected to a variable axial force is assessed by galerkin numerical approach. constitutive behavior is described by three functional forms of elastic energy densities enclosing nonlocal and strain gradient effects and their combination. linear stationary dynamics of nanobeams is modulated by an axial force which controls the global stiffne...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1390

abstract venlafaxine, 1–[2–(dimethylamino)–1–(4–methoxyphenyl) ethyl]cyclohexanol hydrochloride is a novel non-tricyclic antidepressant. venlafaxine is a second generation antidepressant drug, has a neuropharmacologic profile distinct from that of existing antidepressants including tricyclic compounds, selective serotonin reuptake inhibitors and monoamine oxidase inhibitors. venlafaxine impart...

In this paper, free and forced vibration of simply-supported Single-walled carbon nanotube is investigated under the moving nanoparticle by considering nonlocal cylindrical shell model. To validate the theoretical results, modal analysis of nanotube is conducted using ANSYS commercial software. Excellent agreement is exhibited between the results of two different methods. Furthermore, the dynam...

Due to delay in receiving emergency medical services, a high number of injured people and patients annually lose their lives. Determining the medical service area and correct routing of rescuing operation is influential on the reduction of rescuers’ response time. Changing the traffic flow leads to change of medical service area. Therefore, it is expected that by observing changing traffic, the...

Journal: :acta medica iranica 0
ramin kordi sports medicine research center, school of medicine, tehran university of medical sciences, tehran, iran. reza mazaheri sports medicine research center, school of medicine, tehran university of medical sciences, tehran, iran. mohsen rostami sports medicine research center, school of medicine, tehran university of medical sciences, tehran, iran. mohammad ali mansournia sports medicine research center, school of medicine, tehran university of medical sciences, tehran, iran.

the pathophysiology of primary benign exertional headache (eh) is not still clearly defined. some researchers have suggested an impaired vascular response as the etiology of this disorder. in this study we investigated whether there are any differences in blood pressure (bp) and heart rate (hr) of the subjects in course of the static and dynamic exercises and the treadmill stress test between t...

M. Hashemian, S. saffari

Based on the nonlocal Timoshenko beam theory, the dynamic stability of functionally gradded (FG) nanoeams under axial load is studied in thermal environment, with considering surface effect. It is used power law distribution for FGM and the surface stress effects are considered based on Gurtin-Murdoch continuum theory. Using Von Karman geometric nonlinearity, governing equations are derived bas...

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