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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Vertical beam modal response in a broadband energy harvester
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Vertical beam modal response in a broadband energy harvester

机译：宽带能量采集器中的垂直波束模态响应

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摘要

We examined energy harvesting using a vertical composite laminate beam with an additional moving mass subjected to kinematic harmonic excitation. The gravity effect and the moving tip mass applied to the system cause considerable changes in effective spring-mass characteristics of the bending beam. Simultaneously, we observed dynamical beam damping by an additional degree of freedom and non-linear effects including friction between the moving mass and the beam structure. The experiments were performed on the beam excited kinematically by a shaker, while beam velocity measurements were made by a scanning laser vibrometer. We applied modal analysis in the limit of a fairly low excitation level. The selected modal vibrations are illustrated by corresponding output time series.
机译：我们使用垂直复合材料层压梁检查了能量收集，该束具有附加的运动质量，受到运动谐波激励。施加在系统上的重力效应和活动尖端质量导致弯曲梁的有效弹簧质量特性发生重大变化。同时，我们通过附加的自由度和非线性效应（包括运动质量与梁结构之间的摩擦）观察了动态梁的阻尼。实验是通过振动器在运动学上激发的光束上进行的，而光束速度的测量是通过扫描激光振动计进行的。我们在相当低的激励水平的极限下应用了模态分析。所选的模态振动由相应的输出时间序列表示。

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