The occurrence mechanisms of extreme events under random disturbances are relatively complex and not yet clear. In this paper, we take a class of generalized Duffing-type systems as an example to reveal three mechanisms for the occurrence of extreme events. First, it is intuitive that a very large excitation can generate extreme events, such as the Lévy noise. In such a case, extreme excitation works, while it does not require much about the systems. Second, when a system has a bifurcation structure, if the difference of the branches at the bifurcation point is large, a randomly varying bifurcation parameter can lead to extreme events. Finally, when a system has rare attractors, a random impulse excitation, such as Poisson white noise, is able to cause the system to escape from one general attractor into rare attractors. Such a kind of special regime switching behavior can lead to extreme events. These results reveal the possible mechanisms of extreme events in a class of nonlinear Duffing-type systems and provide guidance for further prediction and avoidance of extreme events.
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August 2023
Research Article|
August 03 2023
The occurrence mechanisms of extreme events in a class of nonlinear Duffing-type systems under random excitations
Dan Zhao
;
Dan Zhao
(Conceptualization, Formal analysis, Methodology, Writing – original draft)
1
School of Mathematics and Statistics, Northwestern Polytechnical University
, Xi’an 710072, China
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Yongge Li
;
Yongge Li
(Formal analysis, Funding acquisition, Supervision, Writing – review & editing)
1
School of Mathematics and Statistics, Northwestern Polytechnical University
, Xi’an 710072, China
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Qi Liu
;
Qi Liu
(Validation, Writing – review & editing)
1
School of Mathematics and Statistics, Northwestern Polytechnical University
, Xi’an 710072, China
2
Department of Systems and Control Engineering, Tokyo Institute of Technology
, Tokyo 152-8552, Japan
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Huikang Zhang
;
Huikang Zhang
(Formal analysis, Methodology, Writing – review & editing)
1
School of Mathematics and Statistics, Northwestern Polytechnical University
, Xi’an 710072, China
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Yong Xu
Yong Xu
a)
(Funding acquisition, Supervision, Writing – review & editing)
1
School of Mathematics and Statistics, Northwestern Polytechnical University
, Xi’an 710072, China
3
MOE Key Laboratory for Complexity Science in Aerospace, Northwestern Polytechnical University
, Xi’an 710072, China
a)Author to whom correspondence should be addressed: hsux3@nwpu.edu.cn
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a)Author to whom correspondence should be addressed: hsux3@nwpu.edu.cn
Chaos 33, 083109 (2023)
Article history
Received:
April 30 2023
Accepted:
July 07 2023
Citation
Dan Zhao, Yongge Li, Qi Liu, Huikang Zhang, Yong Xu; The occurrence mechanisms of extreme events in a class of nonlinear Duffing-type systems under random excitations. Chaos 1 August 2023; 33 (8): 083109. https://doi.org/10.1063/5.0156492
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