Steel and Composite Structures, Volume (32), No (3), Year (2019-8) , Pages (293-304)

Title : ( Nonlocal geometrically nonlinear dynamic analysis of nanobeam using a meshless method )

Authors: محمدحسین قدیری راد , Farzad Shahabian Moghadam , Seyed Mahmoud Hosseini ,

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Abstract

In the present paper, the element free Galerkin (EFG) method is developed for geometrically nonlinear analysis of deep beams considering small scale effect. To interpret the behavior of structure at the nano scale, the higher-order gradient elasticity nonlocal theory is taken into account. The radial point interpolation method with high order of continuity is used to construct the shape functions. The nonlinear equation of motion is derived using the principle of the minimization of total potential energy based on total Lagrangian approach. The Newmark method with the small time steps is used to solve the time dependent equations. At each time step, the iterative Newton-Raphson technique is applied to minimize the residential forces caused by the nonlinearity of the equations. The effects of nonlocal parameter and aspect ratio on stiffness and dynamic parameters are discussed by numerical examples. This paper furnishes a ground to develop the EFG method for large deformation analysis of structures considering small scale effects.

Keywords

, cnonlocal elasticity; element, free Galerkin (EFG) method; dynamic analysis; total Lagrangian approach; geometrically nonlinear analysis
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@article{paperid:1075426,
author = {محمدحسین قدیری راد and Shahabian Moghadam, Farzad and Hosseini, Seyed Mahmoud},
title = {Nonlocal geometrically nonlinear dynamic analysis of nanobeam using a meshless method},
journal = {Steel and Composite Structures},
year = {2019},
volume = {32},
number = {3},
month = {August},
issn = {1229-9367},
pages = {293--304},
numpages = {11},
keywords = {cnonlocal elasticity; element-free Galerkin (EFG) method; dynamic analysis; total Lagrangian approach; geometrically nonlinear analysis},
}

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%0 Journal Article
%T Nonlocal geometrically nonlinear dynamic analysis of nanobeam using a meshless method
%A محمدحسین قدیری راد
%A Shahabian Moghadam, Farzad
%A Hosseini, Seyed Mahmoud
%J Steel and Composite Structures
%@ 1229-9367
%D 2019

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