| Autor: |
Bashir, Danish, Rao, B. N. |
| Zdroj: |
Materials Circular Economy; December 2024, Vol. 6 Issue: 1 |
| Abstrakt: |
Piezoelectric energy harvesting using ambient vibrations has received substantial research interest recently because of its potential for developing self-charging devices. The aim is to recover energy wasted or unused in the environment and convert it into electric power using the piezoelectric effect. Several attempts have been made to utilize different materials to develop an efficient energy harvester. However, these harvesters’ linear response and inefficiency have posed several challenges to the researchers. Among various materials, bistable cross-ply laminates possessing two stable shapes have emerged as promising sustainable materials for developing non-linear broadband energy harvesters. These laminates undergo large strains while transitioning from one stable shape to another with rich non-linear dynamics under dynamic loads. This study proposes a fully non-linear finite element model for the energy harvester made of bistable laminates and Macro Fibre Composites (MFC) as piezoelectric material. Commercially available finite element package ABAQUS has been used to analyze the energy harvester under different excitations. The results are compared with the available experimental studies and are found to be in good agreement. The energy harvesting performance of the harvester is calculated in different dynamic regimes and thoroughly compared using time-history and Poincare plots. Results show the advantage of using bistable laminates for sustainable energy harvesting using ambient vibrations as they increase the harvested energy compared to linear response energy harvesters. |
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