نتایج جستجو برای: nonlocal theory of elasticity

تعداد نتایج: 21226683  

In this study, the second type of Green and Naghdi's thermoelasticity theory is applied to present the vibration of a nanobeam subjected to rectified sine wave heating based upon the nonlocal thermoelasticity theory. Both Young's modulus and thermal conductivity are considered to be linear functions of the temperature. The Laplace transform domain is adopted to solve the governing partial diffe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1391

bekenstein and hawking by introducing temperature and every black hole has entropy and using the first law of thermodynamic for black holes showed that this entropy changes with the event horizon surface. bekenstein and hawking entropy equation is valid for the black holes obeying einstein general relativity theory. however, from one side einstein relativity in some cases fails to explain expe...

Journal: :European Journal of Mechanics A-solids 2022

This study presents a physically-consistent displacement-driven reformulation of the concept action-at-a-distance, which is at foundation nonlocal elasticity. In contrast to class existing approaches that adopts an integral stress–strain constitutive relation, approach predicated on strain–displacement relation. One most remarkable consequence this (total) strain energy guaranteed be convex and...

Journal: :journal of computational applied mechanics 0
mohammad zakeri school of civil engineering, college of engineering, university of tehran, tehran p.o. box 11365-4563, iran. reza attarnejad school of civil engineering, college of engineering, university of tehran, tehran, iran amir mohsen ershadbakhsh school of civil engineering, college of engineering, university of tehran, tehran, iran

the accuracy and efficiency of the elements proposed by finite element method (fem) considerably depend on the interpolating functions namely shape functions used to formulate the displacement field within the element. in the present study, novel functions, namely basic displacements functions (bdfs), are introduced and exploited for structural analysis of nanobeams using finite element method ...

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...

In this research, the buckling and bending behaviour of smart nanocomposite plate reinforced by single- walled carbon nanotubes (SWCNTs) under electro-magneto-mechanical loadings is studied. The extended mixture rule approach is used to determine the elastic properties of nanocomposite plate. Equilibrium equations of smart nanocomposite plate are derived using the Hamilton’s principle based on ...

2012
J. M. Ripalda A. M. Sanchez A. G. Taboada A. Rivera B. Alén Y. González L. González F. Briones T. J. Rotter G. Balakrishnan

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