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

Research Project

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
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords機械力学 / 機械力学・制御 / 機械力学・計測制御
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.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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