| A SIMPLIFIED CALCULATING METHOD OF NONLINEAR FREQUENCY OF CABLE NET UNDER MEAN WIND LOAD |
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| 作者姓名： | Feng Ruoqiang Wu Yue Shen Shizhao |
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| 作者单位： | Feng Ruoqiang Wu Yue Shen Shizhao (Shen Zhen Graduate School，Harin Institute of Technology，Shen zhen 518055，China) (Space Structure Research Center，Harin Institute of Technology，Harbin 150090，China) |
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| 摘 要： | The cable net supported glass curtain wallas the most advanced technique in dot point supported glass curtain wall, is widely used in China. Because of its large deflection and high nonlinearity under wind load, the dynamic performance of the cable net is greatly different from that of the conventional linear structures. The continuous membrane theory is used to construct the nonlinear vibration differential equation of the cable net, and the harmonic balance method is used to solve the analytic formula of the nonlinear frequency. In order to verify the accuracy of the above analytic formula, the results of the formula and the nonlinear FEM time-history method are compared and found to be in good agreement. Furthermore, the nonlinear vibration differential equation and the nonlinear frequency obtained in this paper are the basis for the wind-induced response analysis of a cable net under fluctuating wind load.
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| 关 键 词： | 玻璃幕墙 索式结构 几何非线性 非线性振动 频率 |
| 收稿时间： | 2005-12-06 |
| 修稿时间： | 2006-06-08 |
A SIMPLIFIED CALCULATING METHOD OF NONLINEAR FREQUENCY OF CABLE NET UNDER MEAN WIND LOAD |
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| Feng Ruoqiang Wu Yue Shen Shizhao.A SIMPLIFIED CALCULATING METHOD OF NONLINEAR FREQUENCY OF CABLE NET UNDER MEAN WIND LOAD[J].Acta Mechanica Solida Sinica,2006,19(3):248-254. |
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| Authors: | Feng Ruoqiang Wu Yue Shen Shizhao |
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| Institution: | 1. Department of Structures for Engineering and Architecture, University of Naples Federico II, via Claudio 21, 80125 - Naples, Italy |
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| Abstract: | The cable net supported glass curtain wallas the most advanced technique in dot point supported glass curtain wall, is widely used in China. Because of its large deflection and high nonlinearity under wind load, the dynamic performance of the cable net is greatly different from that of the conventional linear structures. The continuous membrane theory is used to construct the nonlinear vibration differential equation of the cable net, and the harmonic balance method is used to solve the analytic formula of the nonlinear frequency. In order to verify the accuracy of the above analytic formula, the results of the formula and the nonlinear FEM time-history method are compared and found to be in good agreement. Furthermore, the nonlinear vibration differential equation and the nonlinear frequency obtained in this paper are the basis for the wind-induced response analysis of a cable net under fluctuating wind load. |
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| Keywords: | dot point supported glass curtain wall cable structure geometrically nonlinear nonlinear vibration frequency |
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