IJE TRANSACTIONS C: Aspects Vol. 31, No. 9 (September 2018) 1585-1592    Article in Press

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Z. Tadi Beni, S. A. Hosseini Ravandi and Y. Tadi Beni
( Received: October 10, 2017 – Accepted in Revised Form: January 04, 2018 )

Abstract    In this paper, size dependent nano-beam type peizoelectric energy hardvester is investigated. For this goal, first nonlinear formulation of isotropic piezoelectric Euler-Bernoulli nano-beam is developed based on the size-dependent piezoelectricity theory then special nano-beam type piezoelectric energy hardvester is probed for different parameters. Basic nonlinear equations of piezoelectric nano-beam are derived using principle of minimum potential energy and variational method. To evaluate the formulation derived, static deformation and free vibration of the hinged-hinged piezoelectric nano-beam is investigated in the special case. The results of the derived formulation are investigated under different parameters, and particularly, the ability and performance of the beam type piezoelectric low power energy harvesting was evaluated in nanoscale.


Keywords    Piezoelectric, Size Effect, Euler-Bernoulli Nano-beam, Energy Harvesting



در این مقاله نانوتیر وابسته به اندازه پیزوالکتریک به عنوان برداشت‌کننده انرژی مورد بررسی قرار گرفته است. برای این هدف ابتدا فرمول غیرخطی از نانوتیر اویلر برنولی ایزوتروپ بر پایه تئوری وابسته به اندازه پیزوالکتریک به دست آمده و سپس برای نوع خاصی از این نانوتیر پارامترهای مختلف مورد بررسی قرار گرفته است. معادلات غیرخطی پایه با روش کمینه انرژی پتانسیل و وردش‌گیری به دست آمده است. برای ارزیابی معادلات به دست آمده خمش استاتیکی و ارتعاش آزاد نانوتیر پیزوالکتریک دو سر مفصل برای حالت خاصی بررسی گردیده و نتایج برای معادلات مذکور نشان می‌دهد که این تیر قابلیت برداشت کم انرژی را در مقیاس نانو دارد.


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