A rotational impact energy harvester utilizing the centrifugal softening effect

Shitong Fang, Suo Wang, Shengxi Zhou, Zhichun Yang, Wei Hsin Liao

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Rotational energy harvesting has received massive attractions due to the abundance and availability of rotational motions in ambient environments. This paper considers a rotational impact energy harvester by utilizing the static instability of a centrifugal softening beam. During the rotation, two rigid piezoelectric beams are impacted by the centrifugal softening driving beam to generate electric energy. When the rotational frequency is increased, with the centrifugal effect, the amplified relative motion between the driving and generating beams significantly contributes to the increase of the impact force and in turn the output power. The theoretical model is developed and used for numerical simulation. It is shown that the output voltage can be significantly improved with the centrifugal softening effect. Furthermore, the impact force is demonstrated to prevent the driving beam from continuously deflecting and suffering the mechanical failure.

源语言英语
主期刊名Active and Passive Smart Structures and Integrated Systems IX
编辑Jae-Hung Han, Gang Wang, Shima Shahab
出版商SPIE
ISBN(电子版)9781510635296
DOI
出版状态已出版 - 2020
活动Active and Passive Smart Structures and Integrated Systems IX 2020 - None, 美国
期限: 27 4月 20208 5月 2020

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
11376
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议Active and Passive Smart Structures and Integrated Systems IX 2020
国家/地区美国
None
时期27/04/208/05/20

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