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برداشت انرژی با استفاده از تیر بایمورف متخلخل با لایه پیزوالکتریک تحت ارتعاشات القایی ناشی از جریان سیال خارجی | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 9، دوره 53، شماره 8، آبان 1400، صفحه 4633-4648 اصل مقاله (3.56 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2021.18200.6780 | ||
| نویسندگان | ||
| محسن فلاح* 1؛ وحید عرب ملکی2 | ||
| 1گروه مهندسی مکانیک/پژوهشکده مطالعات کاربردی سیستم های قدرت، دانشکاه شهیدمدتی آذزبایجان، تبریز، ایزان | ||
| 2دانشکده مکانیک/ گروه مهندسی مکانیک/ دانشگاه تبریز | ||
| چکیده | ||
| در این تحقیق به مطالعه برداشت انرژی توسط تیرهای متخلخل واقع در معرض جریان سیال خارجی پرداخته می‌شود. معادلات دیفرانسیل غیرخطی الکترومکانیکی کوپل حاکم بر رفتار ارتعاشات عرضی تیر متخلخل واقع در معرض جریان سیال خارجی با استفاده از تئوری تیر اویلر-برنولی استخراج شده است. تیر متخلخل یکسرگیردار با جرم متمرکز در انتهای آن که مجهز به یک لایه پیزوالکتریک در سطح بالایی خود است، به عنوان برداشت کننده انرژی در نظر گرفته شده و بعد از حل عددی معادلات غیرخطی حاکم به بررسی تأثیر پارامترهای مختلف بر انرژی تولید شده پرداخته می‌شود. نتایج نشان می‌دهد که در ناحیه قفل‌شدگی میزان برداشت انرژی حداکثر مقدار دارد. همچنین، توزیع تخلخل تأثیر قابل ملاحظه‌ای بر حداکثر دامنه نوسانات و همچنین انرژی برداشت شده توسط تیر متخلخل دارد و ناحیه قفل‌شدگی برای تیر با توزیع تخلخل متقارن، توزیع تخلخل نامتقارن و توزیع تخلخل یکنواخت در محدود سرعت می‌باشد. علاوه بر این، به ازای مقاومت الکتریکی kΩ 1000، حداکثر ولتاژ تولید شده برای تیر با توزیع تخلخل متقارن به صورت سخت‌شوندگی در جداره، توزیع تخلخل نامتقارن و توزیع تخلخل یکنواخت به ترتیب برابر با V 0/39، V 0/44 و V 0/57 می‌باشد که نشان دهنده بیشترین قابلیت برداشت انرژی مربوط به تیر با توزیع تخلخل نوع سوم می‌باشد. | ||
| کلیدواژه‌ها | ||
| برداشت انرژی؛ تیر بایمورف متخلخل؛ ارتعاشات القائی ناشی از سیال؛ ناحیه قفل‌شدگی | ||
| عنوان مقاله [English] | ||
| Piezoelectric Energy Harvesting Using a Porous Beam Under Fluid-Induced Vibrations | ||
| نویسندگان [English] | ||
| Mohsen Fallah1؛ vahid Arab Maleki2 | ||
| 1Mechanical engineering group, Azarbaijan Shahid Madani University | ||
| 2Department of Mechanical Engineering/ University of Tabriz | ||
| چکیده [English] | ||
| In this paper, the energy harvesting by porous beams exposed to the external fluid flow is studied. The electromechanical nonlinear differential equations of the transverse vibration behavior of porous beams exposed to external fluid flow are derived using the Euler-Bernoulli beam theory. A porous beam with concentrated mass which is equipped with a piezoelectric layer at its upper surface is considered energy harvesting. After numerically solving the governing nonlinear equations, the effect of different parameters on the generated energy is investigated. The results show that in the lock-in area, the maximum amount of energy is taken. Also, the porosity distribution has a significant effect on the maximum amplitude of the oscillations as well as the energy harvesting by the porous beam. In addition, for electrical resistance of 1000 kΩ, the maximum voltage generated for the beam with symmetrical porosity distribution in the form of wall stiffness, asymmetric porosity distribution, and uniform porosity distribution is equal to 0.39 V, 0.44 V, and 57 V, respectively, which indicates the highest energy harvesting capability of the beam with the porosity distribution of the third type. | ||
| کلیدواژه‌ها [English] | ||
| Energy harvesting, Porous beam, Fluid induced vibrations, Lock-in region | ||
| مراجع | ||
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