vahdani far, H., Shirani, R., Dehghani, M., yousefi, Y. (2016). Energy Harvesting Electrical from Nano Beam with Layer Piezoelectric under Random Vibration. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(2), 357-370.
Hossein vahdani far; Reza Shirani; Mohammad Dehghani; younes yousefi. "Energy Harvesting Electrical from Nano Beam with Layer Piezoelectric under Random Vibration". Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9, 2, 2016, 357-370.
vahdani far, H., Shirani, R., Dehghani, M., yousefi, Y. (2016). 'Energy Harvesting Electrical from Nano Beam with Layer Piezoelectric under Random Vibration', Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(2), pp. 357-370.
vahdani far, H., Shirani, R., Dehghani, M., yousefi, Y. Energy Harvesting Electrical from Nano Beam with Layer Piezoelectric under Random Vibration. Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 2016; 9(2): 357-370.
Energy Harvesting Electrical from Nano Beam with Layer Piezoelectric under Random Vibration
1MSc Student, Department of Engineering Shahid Chamran University
2MSc student, Department of Engineering, Shahid Chamran University
3Phd student, Department of Mechanical Engineering, Yazd University
4Director of the Department of Mechanical Islamic Azad University Omidiyeh
Abstract
In the present paper, electrical energy harvesting from random vibrations of an Euler-Bernoulli nano-beam with two piezoelectric layers is investigated. The beam is composed of an aluminum layer together with two piezoelectric ceramic layers (PZT 5A) serving as energy harvesting sensors. In the proposed method, the equations governing the bimorph nano-beam will be analytically derived using classical beam theory with corresponding modification coefficients to the nano-structure applied. Then, the derived system of equations will be solved following Kantorovich method. Assumed boundary conditions for the nano-beam are as follows: a clamped end with the mass concentrated at the free end of the beam. Further, the input activation function of the system for energy harvesting was taken as being random. Since the objective of this research is to investigate the amount of harvested energy, the section on the results provides associated voltage and maximum output power curves with the bimorph nano-beam under random activation and input white noise, while also presenting the effects of characteristics and scale factor of the nano-particles on the amount of harvested energy.
برداشت انرژی الکتریکی از تیر نانو با لایه پیزوالکتریک تحت ارتعاشات اتفاقی
Authors [Persian]
حسین وحدانی فر, رضا شیرانی, محمد دهقانی, یونس یوسفی
Abstract [Persian]
در مقاله حاضر، برداشت انرژی الکتریکی از ارتعاشات اتفاقی تیر نانو اویلر- برنولی با دولایه پیزوالکتریک بررسی می‌گردد. تیر مذکور از یک لایه آلومینیم و دو لایه پیزوالکتریک سرامیکی با نام اختصاری PZT 5A به‌عنوان لایه حسگر برداشت انرژی تشکیل شده است. در روش پیش رو معادلات حاکم بر نانو تیر بایمورف به‌صورت تحلیلی با استفاده از تئوری کلاسیک تیرها به همراه اعمال ضریب اصلاحی ساختار نانو به دست خواهد آمد. سپس با استفاده از روش کانتروویچ معادلات سیستم به دست آمده حل خواهند شد. شرایط مرزی در نظر گرفته‌شده برای تیر نانو به‌صورت یکسر گیردار و جرم متمرکز انتهای آزاد تیرمی باشد و تابع تحریک ورودی سیستم جهت برداشت انرژی به‌صورت اتفاقی در نظر گرفته‌شده است. با توجه به اینکه در این پژوهش هدف بررسی میزان برداشت انرژی است بنابراین در قسمت نتایج نمودارهای ولتاژ و حداکثر قدرت خروجی تیر بایمورف نانو تحت تحریک اتفاقی و ورودی نویز سفیدو همچنین تأثیر خواص و ضریب مقیاس ذرات نانو بر میزان برداشت انرژی ارائه شده است.
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