Mechanical Response of a Piezoelectrically Sandwiched Nano-beam Based on the Nonlocal Theory
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 26، شماره: 12
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 728
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شناسه ملی سند علمی:
JR_IJE-26-12_004
تاریخ نمایه سازی: 17 خرداد 1393
چکیده مقاله:
This article deals with the mechanical analysis of a fixed-fixed nano-beam based on nonlocal theory of elasticity. The nano-beam is sandwiched with two piezoelectric layers through its upper and lowersurfaces. The electromechanical coupled equations governing the problem are derived based onnonlocal theory of elasticity considering Euler-Bernoulli beam assumptions. Also, nonlocal piezoelectricity is according to Maxwell’s electrostatic equations. The piezoelectric layers are subjected to a voltage to tune the stiffness of the nano-beam. The equations are solved through step bystep linearization method and Galerkin’s weighted residual method. The results are compared with those of the local model. The effect of piezoelectric voltages on the non-locality of the model is investigated as well.
کلیدواژه ها:
نویسندگان
a Shah-Mohammadi-Azar
Department of Mechanical Engineering, University of Urmia, Urmia, Iran
a Khanchehgardan
Department of Mechanical Engineering, University of Urmia, Urmia, Iran
g Rezazadeh
Department of Mechanical Engineering, University of Urmia, Urmia, Iran
r Shabani
Department of Mechanical Engineering, University of Urmia, Urmia, Iran