碳纤维增强polymer层板弯扭耦合振动的能量收集
Energy harvesting from coupled bending-twisting oscillations in carbon-fibre reinforced polymer laminates
摘要：
共振收集结构（例如压电悬臂梁）的能量收集能力可以通过利用产生有利的应变模式分布的耦合振荡来提高。在这项工作中，我们提出了使用层压碳纤维增强聚合物的第一个示范，以创建悬臂梁进行耦合弯曲-扭转振荡能量收集应用。在弯曲和剪切模式下操作的压电层在第一振动模式下的最大弯曲和扭转应变的位置处附接到弯扭耦合梁表面，以充分利用沿梁的应变分布。这种新的弯曲扭转收获系统的建模，这与实验结果相比，有利。证明了收割机的各种弯曲和扭转模式可以用于创建在更宽的频率范围内操作的收割机，并且这种多模态设备架构提供了一种独特的方法来调谐共振收割系统的频率响应。
英文摘要：
The energy harvesting capability of resonant harvesting structures, such as piezoelectric cantilever beams, can be improved by utilizing coupled oscillations that generate favourable strain mode distributions. In this work, we present the first demonstration of the use of a laminated carbon fibre reinforced polymer to create cantilever beams that undergo coupled bending-twisting oscillations for energy harvesting applications. Piezoelectric layers that operate in bending and shear mode are attached to the bend-twist coupled beam surface at locations of maximum bending and torsional strains in the first mode of vibration to fully exploit the strain distribution along the beam. Modelling of this new bend-twist harvesting system is presented, which compares favourably with experimental results. It is demonstrated that the variety of bend and torsional modes of the harvesters can be utilized to create a harvester that operates over a wider range of frequencies and such multi-modal device architectures provides a unique approach to tune the frequency response of resonant harvesting systems.
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