Chaotic dynamics of the vibro-impact system under bounded noise perturbation

Chaotic dynamics of the vibro-impact system under bounded noise perturbation
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有界噪声扰动下振动冲击系统的混沌动力学

DOI:
10.1016/j.chaos.2015.01.003
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发表时间:
2015-04
影响因子:
7.8
通讯作者:
Junli Liu
Junli Liu
中科院分区:
数学1区
文献类型:
--
作者:
Jinqian Feng;Junli Liu

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本文用扩展Melnikov方法研究了有界噪声激励下振动冲击系统的混沌动力学问题。首先,将确定性振动冲击系统的Melnikov方法推广到随机情况。然后给出了一个典型的随机Duffing振动冲击系统的应用实例。利用均方值意义上的随机Melnikov过程,导出了混沌发生的解析条件。此外,数值模拟也验证了分析结果的有效性。讨论了系统参数对混沌动力学的影响。
In this paper, chaotic dynamics of the vibro-impact system under bounded noise excitation is investigated by an extended Melnikov method. Firstly, the Melnikov method in the deterministic vibro-impact system is extended to the stochastic case. Then, a typical stochastic Duffing vibro-impact system is given to application. The analytic conditions for occurrence of chaos are derived by using the random Melnikov process in the mean-square-value sense. In addition, the numerical simulations confirm the validity of analytic results. Also, the influences of interesting system parameters on the chaotic dynamics are discussed.
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