Study on Wind-induced Vibration and Fatigue Life of Cable-stayed Flexible Antenna

3rd International Conference on Energy Equipment Science and Engineering

He, Kongde^1 ; He, Xuehui^2 ; Fang, Zifan^2 ; Zheng, Xiaowei^2 ; Yu, Hongchang^2

Hubei Key Laboratory of Hydroelectric Machinery Design and Maintenance, China Three Gorges University, Yichang

443002, China^1

College of Mechanical and Power Engineering, China Three Gorges University., Yichang

443002, China^2

关键词: Auto regressive models;    Fatigue cumulative damage;    Flexible antennas;    Flexible multi bodies;    Vortex induced resonance;    Vortex induced vibration;    Vortex-induced forces;    Wind induced vibrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012119/pdf
DOI  :  10.1088/1755-1315/128/1/012119

来源: IOP

【 摘 要 】

The cable-stayed flexible antenna is a large-span space structure composed of flexible multibody, with low frequency of vibration, vortex-induced resonance can occur under the action of Stochastic wind, and a larger amplitude is generated when resonance occurs. To solve this problem, based on the theory of vortex-induced vibration, this paper analyzes the vortex-induced vibration of a cable-stayed flexible antenna under the action of Wind. Based on the sinusoidal force model and Autoregressive Model (AR) method, the vortex-induced force is simulated, then the fatigue analysis of the structure is based on the linear fatigue cumulative damage principle and the rain-flow method. The minimum fatigue life of the structure is calculated to verify the vibration fatigue performance of the structure.