Numerical and experimental study of a gauge-shaped beam for improved performance of piezoelectric energy harvester
Document Type
Article
Publication Date
12-1-2021
Abstract
This paper examines a new, non-conventional, gauge-shaped beam (GSB) cantilever for enhanced vibration energy scavenging. The stress evolution of the GSB as well as its eigenfrequency and energy harvesting capability (when coupled with macro fiber composite (MFC) transducer) are investigated by finite element method. A comparison of performance between the proposed GSB cantilever configuration and conventional harvester of equal mass is also conducted. Both the simulation and experimental validation results showed that the gauge-shaped beam cantilever configuration has lower resonant frequencies and improved power output when used as harvester substrate. Further, we evaluated the effect of tip mass orientation/position on the GSB harvester performance by considering five different configurations namely, Confg A, Confg B, Confg C, Confg D and Confg E. The analysis shows that Confg A with 5 x 20 x 5 mm(3) tipmass dimension has the highest effect of 9.8% on the output power of the harvester compared to the other configurations. However, Confg C and D have the lowest resonant frequencies at fundamental vibration mode.
Keywords
Gauge-shaped beam, Improved performance, Piezoelectric energy harvester, Harvester performance
Divisions
mechanical
Funders
National key Research and Development Program of China (2019YFB2006404),Fundamental Research Funds for the Central University (2242019K3DN05)
Publication Title
Microsystem Technologies-Micro-and-Nanosystems-Information Storage and processing
Volume
27
Issue
12
Publisher
Springer Verlag (Germany)
Publisher Location
TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY