[1] Zhou Rui, Wang Hao, Xu Zidong,. Analysis on flutter performance of flexible photovoltaic support based on full-order method [J]. Journal of Southeast University (English Edition), 2024, 40 (3): 238-244. [doi:10.3969/j.issn.1003-7985.2024.03.003]

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Analysis on flutter performance of flexible photovoltaic support based on full-order method()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

40

Issue:

2024 3

Page:

238-244

Research Field:

Civil Engineering

Publishing date:

2024-09-20

Info

Title:

Analysis on flutter performance of flexible photovoltaic support based on full-order method

Author(s):

Zhou Rui;  Wang Hao;  Xu Zidong

Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, China

Keywords:

flexible photovoltaic support;  flutter critical wind speed;  full-order method;  finite element model

PACS:

TU399

DOI:

10.3969/j.issn.1003-7985.2024.03.003

Abstract:

Taking a three-cable flexible photovoltaic(PV)support structure as the research subject, a finite element model was established. Utilizing a full-order flutter analysis method, the flutter critical wind speed and flutter frequency of the flexible PV support structure at a tilt angle of 0° were calculated. The results showed good agreement with wind tunnel test data. Further analysis examined the pretension effects in the load-bearing and stabilizing cables on the natural frequency and flutter critical wind speed of the flexible PV support structure. The research findings indicate increasing the pretension in the load-bearing cables significantly raises the natural frequencies of the first four modes. Specifically, as the pretension in the load-bearing cables increases from 22 to 102 kN, the flutter critical wind speed rises from 17.1 to 21.6 m/s. By contrast, the pretension in the stabilizing cable has a smaller effect on the natural frequency and flutter critical wind speed of the flexible PV support structure. When the pretension in the stabilizing cable increased from 22 to 102 kN, the flutter critical wind speed increased from 17.1 to 17.7 m/s. For wind-resistant design of flexible PV support structures, it is recommended to prioritize increasing the pretension in the load-bearing cables to enhance the structural flutter performance.

References:

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Memo

Memo:

Biographies: Zhou Rui(1999—), male, Ph.D. candidate; Wang Hao(corresponding author), male, doctor, professor, wanghao1980@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 52338011, 52208481), China Postdoctoral Science Foundation(No. 2023M730581).
Citation: Zhou Rui, Wang Hao, Xu Zidong. Analysis on flutter performance of flexible photovoltaic support based on full-order method[J].Journal of Southeast University(English Edition), 2024, 40(3):238-244.DOI:10.3969/j.issn.1003-7985.2024.03.003.

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