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基础激励下的非线性振动问题,建立了椭圆平面双曲抛物面碳纤维索网在基础位移激励下的非线性振动方程,采用Galerkin原理及KBM法求得了椭圆平面双曲抛物面碳纤维索网非线性振动的近似解.在把碳纤维索网与钢丝索网比较的基础上,讨论分析了位移激励、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,得到了碳纤维索网对温度变化不敏感,而钢丝索网受温度的影响却很大,且碳纤维索网振动特性优于钢丝索网振动特性的结论.
Taking the temperature effect into consideration, the nonlinear vibration of elliptic paraboloid cable net using carbon fiber cables under foundation displacement excitation was studieded. Then the nonlinear vibration equation was presented, whose approximate solution was given with Galerkin principle and KBM method. And the effects of foundation displacement excitation, temperature, amplitude and asexternal damping on the nonlinear vibration of elliptic paraboloid cable net with the comparison between steel cable and carbon fiber cable were discussed. At last the conclusions was got that the temperature had great influence on steel cable and carbon fiber cable not, and the vibration characteristics of cable net using carbon fiber cables is superior to cable net using steel.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2010年第1期4-8,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])
湖南省科技计划项目资助(2008FJ3067)
关键词
基础
位移激励
碳纤维
索网
非线性振动
foundation
displacement excitation
carbon fiber cables
cable net
nonlinear vibration
