Optimal configurations of bistable piezo-composites for energy harvesting
Optimal configurations of bistable piezo-composites for energy harvesting
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DOI：
10.1063/1.3693523
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发表时间：
2012-03-12
影响因子：
4
通讯作者：
Inman, D. J.
中科院分区：
文献类型：
--
作者：
Betts, D. N.;Kim, H. A.;Inman, D. J.
本文提出了一种双稳复合材料与压电体相结合的结构，用于环境振动的宽带能量采集。与传统的谐振系统相比，这些非线性装置提高了发电量，并且可以设计成比磁性悬臂梁系统占用的体积更小。本文介绍了基于双稳态复合材料的优化结果，该优化通过基于设备的静力学来发现用于收集的最佳配置，从而提高了发电量。考虑了器件的最优长宽比、厚度、堆叠顺序和压电面积。以前没有考虑过的几何结构和压电体配置增加了电输出。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.3693523]
This paper presents an arrangement of bistable composites combined with piezoelectrics for broadband energy harvesting of ambient vibrations. These non-linear devices have improved power generation over conventional resonant systems and can be designed to occupy smaller volumes than magnetic cantilever systems. This paper presents results based on optimization of bistable composites that enables improved electrical power generation by discovering the optimal configurations for harvesting based on the statics of the device. The optimal device aspect ratio, thickness, stacking sequence, and piezoelectric area are considered. Increased electrical output is found for geometries and piezoelectric configurations, which have not been considered previously. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3693523]