摘要
在考虑温度变化的基础上,建立了椭圆双曲抛物面碳纤维索网的非线性振动控制方程,采用Galerkin原理及L-P法求出了椭圆双曲抛物面碳纤维索网非线性固有振动的近似解析解.在把碳纤维索网与钢丝索网比较的基础上,讨论分析了温度、振幅、索网垂度等因素对椭圆双曲抛物面碳纤维索网非线性振动的影响.得到了温度升高将使索网非线性自振频率降低,振幅和索网垂度增大会使索网非线性自振频率增大的结论.
The nonlinear vibration governing equation with geometric deformation of elliptic hyperbolic net using carbon fiber reinforced polymer was presented on the basis of considering temperature changing. The approximate solution of nonlinear vibration of elliptic hyperbolic net using carbon fiber reinforced polymer was given by means of the Galerkin principle and Improved L-P method. Elements that affect nonlinear vibration, such as the amount of temperature changing, amplitude, as well as rise were discussed with the comparison between cable and carbon fiber reinforced polymer . The temperature increment will cause the nonlinear vibration frequency of cable structure to fall. On the contrary, amplitude and sag increment will cause the nonlinear vibration frequency to increase. Such are the conclusions that this paper has come to.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2009年第3期319-323,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
湖南“十一五”重点建设学科资助项目(湘教通[2006]180号)
湖南省科技计划资助项目(2008FJ3067)
关键词
椭圆
碳纤维
索网
非线性振动
elliptic planes carbon fiber reinforced polymer net nonlinear vibration
