Köprü Yapısından Piezoelektrik Tabanlı Enerji Hasadının Sayısal Modellemesi

Year 2020, Volume: 6 Issue: 2, 130 - 139, 31.12.2020

Alper Polat , Kouider Bendıne

https://doi.org/10.29132/ijpas.796480

Cited By: 4

Abstract

Köprüler, dengesizlik ve titreşimlere neden olabilecek çeşitli harici yüklere maruz kalabilirler. İyi tarafından bakıldığında, bu tür titreşimler sınırsız bir enerji kaynağı olabilir ve köprüleri izlemek için kullanılan cihazlara güç sağlayabilirler. Mekanik titreşimler, genellikle piezoelektrik tabanlı enerji hasadı olarak bilinen bir işlem olan doğrudan piezoelektrik etkisinden yararlanılarak elektrik enerjisine dönüştürülür. Bu çalışmada bir köprüdeki piezoelektrik enerji kazanımı incelendi. Piezoelektrik enerji toplayıcıları yerleştirilen köprünün bir modeli ANSYS APDL kullanılarak oluşturuldu. Zaman ve frekans bölgelerinde farklı hareketli yüklere sahip çeşitli senaryolar incelendi. Ayrıca, toplayıcıların pozisyonlarının etkisi de araştırıldı. Elde edilen sonuçlar, köprü sistemlerinden titreşim enerjisinin toplanmasının umut verici bir enerji kaynağı olduğunu gösterdi. Ayrıca toplayıcıların maksimum mod şekil genliğine yakın yerleştirilmesi ve hareketli yüklerin doğal frekanslarının toplayıcıların doğal frekansına uyacak şekilde tasarlanması durumunda daha faydalı olabileceğini gösterdi.

Numerical Modelling of Piezoelectric Based Energy Harvesting from The Bridge Structure

Abstract

Bridges can be subjected to a variety of external loads that can lead to instability and cause vibrations. Fortunately, such vibrations can be a source of unlimited sustainable energy that may powers the devices used to monitor the bridges. A possible way to convert such vibrations is by utilizing the direct piezoelectric effect, a process known as piezoelectric based energy harvesting. The present study investigates piezoelectric energy harvesting from a bridge. A model of the bridge with mounted piezoelectric harvesters was developed under ANSYS APDL. Various scenarios with different moving loads were investigated in time and frequency domains. Moreover, the effect of the positions of the harvesters was also explored. Results confirmed that harvesting vibration energy from bridge systems is a promising source of energy. Also, it can be profitable if the harvesters are located near the maximum mode shape amplitude and they are designed in a way to make their natural frequency match the natural frequency of the moving loads.

Keywords

Energy harvesting, Piezoelectric, Vibration, Bridge, Numerical modelling

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