Energy harvesting from resonance frequencies of multi-beam structure with the synchronization phenomenon

The aim of this study is to investigate energy harvesting induced by a novel multi-beam structure with varying structural properties, utilizing the synchronization phenomenon. For this purpose, beams with different geometric properties are fabricated and connected to the main beam. Then, vibrations are generated on the main beam as a result of wind effect or external dynamic input from structural dynamic elements. The aim is to perform energy harvesting by synchronization phenomenon by ensuring that these vibrations are transmitted to all other beam elements. A 3D printer was used to produce unique beams using PETG material. Experimentally, it was investigated which type of beam could harvest more energy by varying the stiffness values of the beams produced in different geometric shapes. In addition to the experimental studies, the mathematical model of the system was obtained, and the transfer functions from the synchronous beam elements to the main beam elements were generated and analyzed. In addition, the system dynamics was studied numerically by performing a finite element analysis using the solid model of the system. The results of all these approaches are presented. The results show that under the same external dynamic input effect, the root mean square vibration amplitude of the straight beam is 0.2690 and the frequency peak value is 0.075 dB, while the root mean square vibration amplitude of the elliptical beam is 0.3997 and the frequency peak value is 0.2 dB. This clearly shows how much the vibrations from the structure can increase with variable frequency values.