FINITE ELEMENT ANALYSIS OF ALLOWABLE LOAD OF FIXED PHOTOVOLTAIC BRACKETS

Zhang Liang; Zhu Ziling; Luo Bingbing; Yang Xiaoyu

doi:10.19912/j.0254-0096.tynxb.2022-0046

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (9) : 15-20. DOI: 10.19912/j.0254-0096.tynxb.2022-0046

FINITE ELEMENT ANALYSIS OF ALLOWABLE LOAD OF FIXED PHOTOVOLTAIC BRACKETS

Zhang Liang, Zhu Ziling, Luo Bingbing, Yang Xiaoyu

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Abstract

For the fixed photovoltaic brackets, finite element simulations were carried out by using the experimental material properties and three-dimensional linear open beam elements. The accuracy of finite element simulation was verified by a simple beam based on actual measurement. According to the finite element simulation results, allowable load in serviceability limit state of brackets was determined. Subsequently, the influences of beam spacings, support columns number and column distances on allowable load were investigated respectively. Results show that the number of columns has the most significant effect on allowable load. With the increase of the number, the load is more evenly distributed on the whole bracket, and allowable load increases. On average, each additional pair of columns increases allowable load by about 1953 N. With the increase of beam spacing, supporting effect of the middle two beams by the column decreases, the local deflection increases and allowable load decreases. The variation of distance between front and rear columns mainly affects the load uniformity. When the distance is 50% of oblique beam horizontal projection length, the deflection is evenly distributed on the four beams, and the allowable load reaches maximum.

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photovoltaic brackets / wind load / finite element analysis / stress / deformation / fixed

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Zhang Liang, Zhu Ziling, Luo Bingbing, Yang Xiaoyu. FINITE ELEMENT ANALYSIS OF ALLOWABLE LOAD OF FIXED PHOTOVOLTAIC BRACKETS[J]. Acta Energiae Solaris Sinica. 2022, 43(9): 15-20 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0046

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