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扰动sine-Gordon方程的混沌动力学(英文)

Keywords: sine-Gordon方程,规范形,全局分叉,混沌动力学

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Abstract:

为了研究具有阻尼和强迫激励的截断sine-Gordon方程的全局分叉和混沌动力学,使用广义渐近惯性流形方法获得了二模态截断sine-Gordon方程.然后利用多尺度法获得了主共振和1:1内共振情况下截断sine-Gordon方程的平均方程.利用规范形理论和Maple符号程序,获得了一对双零特征值和一对纯虚特征值情况下平均方程的规范形.使用全局摄动法分析了二模态截断sine-Gordon方程的全局分叉和混沌动力学,数值模拟同样发现在二模态截断sine-Gordon方程中存在着混沌运动.

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