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2015 Fiscal Year Final Research Report

Development of a power generator utilizing chaotic vibrations of a saddle-shaped plate for maintenance free small hydroelectric generation

Research Project

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Project/Area Number 25420175
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Dynamics/Control
Research InstitutionGunma University

Principal Investigator

Nagai Ken-ichi  群馬大学, その他部局等, 名誉教授 (00110403)

Co-Investigator(Kenkyū-buntansha) MARUYAMA Shinichi  群馬大学, 大学院理工学府, 准教授 (60344925)
Project Period (FY) 2013-04-01 – 2016-03-31
Keywords機械力学
Outline of Final Research Achievements

Aiming at establishment of an energy harvesting method by generating dynamic-through flow-induced vibrations in an saddle-shaped thin plate with a piezo-elastic sheet, experimental results are presented on flow-induced vibrations of a bi-stable rectangular CFRP laminated curved plate. The plate has two equilibrium configurations, a cylinder and a saddle. Vibration responses of the plate are measured, with changing the angle and speed of the flow. Maximum strain is obtained when the vibration response is accompanied by dynamic snap-through with specific velocity and angle of flow, in which broader frequency components are generated compared with the response without dynamic snap-through. Contributions of vibration modes to the chaotic responses are inspected by the principal components analysis.

Free Research Field

機械力学 非線形振動

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Published: 2017-05-10   Modified: 2017-05-22  

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