基础位移激励下椭圆抛物面碳纤维索网的振动
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湖南省科技计划项目资助(2008FJ3067),湖南“十一五”重点建设学科项目资助


The nonlinear vibration of elliptic paraboloid cable net using carbon fiber cables under foundation displacement excitation
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    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.

    Abstract:

    Taking into account the temperature effect ,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 are obtained that the temperature have great influence on steel cable and bat not on carbon fiber cable,and the vibration characteristics of cable net using carbon fiber cables is superior to cable net using steel.

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吴晓,杨立军,孙晋.基础位移激励下椭圆抛物面碳纤维索网的振动[J].动力学与控制学报,2009,7(2):153~157; Wu Xiao, Yang Lijun, Sun Jin. The nonlinear vibration of elliptic paraboloid cable net using carbon fiber cables under foundation displacement excitation[J]. Journal of Dynamics and Control,2009,7(2):153-157.

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  • 收稿日期:2009-03-17
  • 最后修改日期:2009-03-26
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