主体结构位移激励下碳纤维索网的振动

作者:刘少斌 刊名:兰州理工大学学报 上传者:田国清

【摘要】在考虑温度变化的基础上,研究椭圆平面双曲抛物面碳纤维索网在主体结构激励下的非线性振动问题.建立椭圆平面双曲抛物面碳纤维索网在主体结构位移激励下的非线性振动方程,采用Galerkin原理及KBM法求得椭圆平面双曲抛物面碳纤维索网非线性振动的近似解.在将碳纤维索网与钢丝索网作比较的基础上,讨论分析位移激励、温度、振幅、外阻尼等因素对椭圆平面双曲抛物面碳纤维索网非线性振动的影响,得到碳纤维索网对温度变化不敏感,且碳纤维索网振动特性优于钢丝索网振动特性的结论.

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  文章编号 : 167325196(2009) 060114205 主体结构位移激励下碳纤维索网的振动 刘少斌 (湖南文理学院 土木建筑工程学院 , 湖南 常德   415000) 摘要 : 在考虑温度变化的基础上 ,研究椭圆平面双曲抛物面碳纤维索网在主体结构激励下的非线性振动问题. 建立椭圆平面双曲抛物面碳纤维索网在主体结构位移激励下的非线性振动方程 ,采用 Galerkin 原理及 KBM 法求得椭圆平面双曲抛物面碳纤维索网非线性振动的近似解. 在将碳纤维索网与钢丝索网作比较的基础上 ,讨论分析位移激励、温度、振幅、外阻尼等因素对椭圆平面双曲抛物面碳纤维索网非线性振动的影响 ,得到碳纤维索网对温度变化不敏感 ,且碳纤维索网振动特性优于钢丝索网振动特性的结论. 关键词 : 主体结构 ; 位移激励 ; 碳纤维 ; 索网 ; 非线性振动中图分类号 : TU311. 3 ; TU38 ; O322   文献标识码 : A Vibration of cable net made of carbon fiber cables under excitation of main structure displacement L IU Shao2bin(Dept. of Civil and Architectural Engineering , Hunan University of Arts and Science , Changde  415000 , China)Abstract : Taking temperature variation into account , nonlinear vibration of elliptic paraboloid cable net made of carbon fiber cables was investigated under excitation of main structure displacement. Its nonlinear vibration equation was presented , and the approximate solution of nonlinear vibration of elliptic paraboloid cable mesh was given by using Galerkin principle and KBM method. Then the influence of such factors as the displacement excitation , temperature , amplitude , and external damping on the nonlinear vibration of the cable net were discussed and analyzed on the basis of comparison between steel cable net and carbon fi2ber cable net , so that a conclusion was got that carbon fiber cable net was insensitive to temperature change and the vibration characteristics of cable net with carbon fiber cables was superior to cable net with stee

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