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轴向运动薄板非线性振动及其稳定性研究 被引量:14

STUDY ON NONLINEAR VIBRATION AND STABILITY OF AXIALLY MOVING PLATES
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摘要 应用增量谐波平衡法(IHB法)研究轴向运动薄板横向非线性振动特性及其稳定性.通过Hamilton原理推导出了非惯性参考系下四边简支轴向运动薄板的横向振动微分方程,然后利用Galerkin方法离散运动方程.对离散后的非线性方程组应用IHB法进行非线性振动分析,研究了在固有频率之比ω20/ω10接近于3:1情况下,外激励频率ω在ω10附近的具有内部共振的基谐波响应.最后用多元Floquet理论分析了系统周期解的稳定性,其中采用Hsu方法来计算转移矩阵.通过对具体例子的数值计算,分别得到了自由振动和不同外激励下的频幅相应曲线,通过对比运动梁模型和运动薄板模型的计算结果,分析了各种模型的适用范围. The laterally nonlinear vibration of axially moving plates was analyzed by the incremental harmonic balance (IHB) method. Firstly, the motion equations of an axially moving plate were derived by Hamilton principle. Then, the Galerkin method was employed to discretize the governing equations, and the IHB method was applied to solve the nonlinear equations. Finally, the Floquet theory and Hsu' s method were used to investigate the stability of the solution. The free vibrations and the forced responses of an axially moving plate with internal resonance were studied. The effects of aspect ratio of plate were also discussed.
出处 《动力学与控制学报》 2007年第4期314-319,共6页 Journal of Dynamics and Control
基金 国家自然科学基金资助项目(10272117 10672193) 广东省自然科学基金资助项目(04009738) 中山大学高等学术研究中心基金资助项目(06M13)~~
关键词 轴向运动薄板 非线性振动 增量谐波平衡法 内部共振 FLOQUET理论 axially moving plate, nonlinear vibration, incremental harmonic balance method, internal resonance, Floquet theory
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参考文献6

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