Perpustakaan Digital ITB

In the current work, the evaluation of the piezoelectric energy harvesting potential from structural vibration is conducted. The structural vibration due to Fluid-Structure Interaction (FSI) phenomenon is observed. The dynamic response of a piezoelectric-based unimorph plate excited by shedding vortices, or so-called Vortex-Induced Vibration (VIV), is investigated. An advanced computational method is implemented to perform multiphysics analysis. A unified finite element-based software is used. Hence, the responses of fluid, structure and electric fields are calculated simultaneously. Benchmark problems concerning unimorph under base excitation conditions are evaluated. Threedimensional (3D) and two-dimensional (2D) models are used for the computational analysis. The structural responses from both models depict insignificant differences (less than 1 %). Moreover, the results obtained from the present computational scheme are well agreed with the experimental and numerical data from the literature. The main investigation in this work concerns a VIVbased case study concerning a flow-over cylinder exerting a unimorph plate. The voltage output from the present model shows the same level of order during steady condition as the one obtained in the literature, around 1 v/mm amplitude.