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 本文已被：浏览 5023次   下载 0次 分享到： 微信 更多 字体:加大+|默认|缩小- 温室风振分析中的压杆弯曲振动动态刚度阵模型 邓婷1, 姜旭曈1, 丁敏1, 汤丽锋2 1.中国农业大学水利与土木工程学院;2.国核工程有限公司

DOI：

Dynamic stiffness matrix model for flexural vibration of compression bar in greenhouse wind vibration analysis
Deng Ting1, Jiang Xutong1, Ding Min1, Tang Lifeng2
1.College of Water Resources & Civil Engineering, China Agricultural University;2.State Nuclear Power Engineering Company
Abstract:
In order to research the flexural vibration of compression bar in greenhouse wind vibration analysis, differential equation for transverse flexural vibration of compression bar was constructed according to geometric equation, equilibrium equation and physics equation of compression bar considering its second-order effect and inertia force. Displacement vector expressed by the basis function and the displacement coefficient for transverse flexural vibration of compression bar was also achieved. Based on the displacement boundary condition, displacement coefficient expressed by nodal displacement vector was obtained. Internal force equations of compression bar were established and then internal force at bar ends expressed by nodal displacement vector was provided. Finally, Total dynamic stiffness matrix colligating mass matrix，geometry matrix and stiffness matrix was given. This method can provide an exact solution for flexural vibration of compression bar expressed in matrix and vector format, which is simple and useful. And it can be applied to accurate analysis for dynamic performance and dynamic responses of compression bar in greenhouse under wind load.
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