Study on Piezoelectric Energy Harvesting of Square Column Oblique Body at Different Angles

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Study on Piezoelectric Energy Harvesting of Square Column Oblique Body at Different Angles

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[1]WANG Junlei,ZHANG Chengyun,CHEN Weizhe,et al.Study on Piezoelectric Energy Harvesting of Square Column Oblique Body at Different Angles[J].Journal of Zhengzhou University (Engineering Science),2021,42(01):99-104.[doi:10.13705/j.issn.1671-6833.2021.01.013]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 42卷 Number of periods: 2021 01 Page number: 99-104 Column: Public date: 2021-03-14

Title:: Study on Piezoelectric Energy Harvesting of Square Column Oblique Body at Different Angles

Author(s):: WANG Junlei1; ZHANG Chengyun1; CHEN Weizhe1; 2; WU Yipeng3; WANG Dingbiao1; JIN Zunlong1; 1.School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China; 2.Xuchang Quality and Technical Supervision, Inspection and Testing Center, Xuchang 461000, China; 3.State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Keywords:: square column oblique body; piezoelectric energy harvest; galloping; bare square column; vibration reduction

CLC:: -

DOI:: 10.13705/j.issn.1671-6833.2021.01.013

Abstract:: In this paper, through wind tunnel test, the energy harvesting characteristics of the square column oblique body (θ =30°,45°,60°) and the bare square column with galloping piezoelectric energy harvester were studied. The variation rule of their output power and voltage under different wind speed were analyzed. The results showed that under the optimal load R=0.6 MΩ, the output voltage and power of the bare square column and the square column oblique body (θ =30°, 45°, 60°) piezoelectric energy harvester increasd with the increase of wind speed, while the growth rate showed a trend of increasing first and then decreasing. The output voltage and power of the bare square column were greater than that of the square column oblique body. When the wind speed was U=3.194 m/s, the output power collected by the bare square column galloping piezoelectric energy harvester was 0.006 3 mW, which was 1.28 times, 1.39 times and 1.55 times of the square column oblique body with the oblique angle θ of 30°, 45° and 60°, respectively. Under the same wind speed, the output voltage and power of the square column oblique body with the oblique angle θ of 30° were the highest, followed by 45°, and the lowest was 60°. The study of this paper could provide reference for the design of relevant piezoelectric energy harvester and the design of vibration reduction in engineering.

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Last Update: 2021-03-15