Research on vibration frequency of membrane structure considering fluid and structure interaction

被引：0
|
作者：
Pan Y. [1 ,2 ]
Rao M. [1 ]
Zhou Y. [1 ]
Wang S. [1 ]
Lin Y. [1 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[2] Key Laboratory of Seismic Engineering of Sichuan Province, Southwest Jiaotong University, Chengdu
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷 / 08期
关键词：
Boundary element method; Lifting surface theory; Membrane structure; Simplified aeroelastic model; Vibration frequency;
D O I：
10.14006/j.jzjgxb.2018.0266
中图分类号：
学科分类号：
摘要：
The fluid and structure interaction of membrane structures is relatively obvious because of its structural particularity. Considering the complexity of the fluid and solid interaction, a simplified aeroelastic model was used to simplify the process. Based on the simplified aeroelastic model, the vibration frequencies of membrane structure under static and dynamic wind loads were numerically analyzed. For open membrane structures, on the basis of the lifting-surface theory, the vibration frequency was approximately calculated by the vortex lattice method. For closed membrane structures, potential flow theory was applied to establish the dynamic equilibrium equation and analyze the interaction between air and structure. The vibration frequency of closed membrane structure was solved by boundary element method and finite element method. The comparison between the calculated results and the experimental results shows that the analysis methods are suitable for the vibration frequency analysis of membrane structures. The characteristics of vibration frequency of open membrane structure and closed membrane structure under dynamic wind load were studied. It can be concluded that added mass is the main impact factor of the vibration frequency of membrane structures. The added mass increases with the wind speed, which leads to the decrease of vibration frequency. As the influence of the aeroelastic stiffness on the vibration frequency of the closed membranes structure, the added mass of the closed membrane is larger than that of the open membrane structure, but the vibration frequency of the open membrane structure is not larger than that of the closed membrane structure. © 2019, Editorial Office of Journal of Building Structures. All right reserved.
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页码：136 / 144
页数：8
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