Abstract
This study proposes a new flutter harvesting analysis framework based on an absolute nodal coordinate formulation (ANCF) model that includes a nonlinear finite element method, a three-dimensional unsteady vortex lattice method that considers nonlinearities, and a piezoelectric equation. Because conventional studies assumed no extensionality of the neutral axis, use of flutter harvester configurations was restricted. However, this framework using the ANCF model can be applied to different configurations (e.g., extensible harvesters with fixed-fixed boundaries or multibody harvesters). The feasibility of the proposed method was verified by conducting wind tunnel experiments. The frequencies, root mean square (RMS) displacements, and RMS voltages of the analysis and experiment were compared. The difference between experiment and analysis was 23% in terms of frequencies. One of the reasons for the difference was viscous drag. Although the results were not a perfect match, the introduction of a viscous drag model will be considered in future studies to enhance this framework.
| Original language | English |
|---|---|
| Article number | 104351 |
| Number of pages | 7 |
| Journal | Mechanics Research Communications |
| Volume | 143 |
| Early online date | 30 Nov 2024 |
| DOIs | |
| Publication status | Published - Jan 2025 |
Bibliographical note
Copyright © 2024 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/).Funding
This work was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (grant numbers 21K14341 and 22K18853), the Ebara Hatakeyama Memorial Foundation, the Nohmura Foundation for Membrane Structure Technology, the Mazak Foundation, and the JSPS Core-to-Core Program, A. Advanced Research Networks (JPJSCCA20200005). This study was supported by the Collaborative Research Project of the Institute of Fluid Science (IFS), Tohoku University (J23I013). The authors acknowledge the use of the IFS wind tunnel facility for our experiments.
Keywords
- Absolute nodal coordinate formulation
- Wind tunnel experiment
- Flutter
- Energy harvesting
- Unsteady vortex lattice method
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