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Numerical and experimental study of a gauge-shaped beam for improved performance of piezoelectric energy harvester
Microsystem Technologies ( IF 2.1 ) Pub Date : 2021-05-17 , DOI: 10.1007/s00542-021-05219-y
Dauda Sh. Ibrahim , Sun Beibei , Sado Fatai , Orelaja Adewale Oluseyi , Umer Sharif

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 \(5 \times 20 \times 5\,{\text{mm}}^{3}\) 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.



中文翻译:

量规形梁改善压电能量收集器性能的数值和实验研究

本文研究了一种新型的,非常规的规范形梁(GSB)悬臂,用于增强振动能量的清除。通过有限元方法研究了GSB的应力演化及其本征频率和能量采集能力(与宏纤维复合材料(MFC)传感器耦合时)。还对建议的GSB悬臂配置与等质量的常规收割机之间的性能进行了比较。仿真和实验验证结果均表明,轨距形梁悬臂配置用作收割机基板时,共振频率更低,功率输出更高。此外,我们通过考虑Confg A,Confg B,Confg C,\(5 x 20 x 5 x ,{\ text {mm}} ^ {3} \)与其他配置相比,尖端质量尺寸对收割机的输出功率有9.8%的最大影响。但是,Confg C和D在基本振动模式下具有最低的谐振频率。

更新日期:2021-05-17
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