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Stochastic responses of Duffing–Van der Pol vibro-impact system under additive colored noise excitation |
Li Chao (李超)a, Xu Wei (徐伟)a, Wang Liang (王亮)a, Li Dong-Xi (李东喜)b |
a Department of Applied Mathematics, Northwestern Polytechnical University, Xi’an 710072, China; b School of Mathematics, Taiyuan University of Technology, Taiyuan 030024, China |
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Abstract A response analysis procedure is developed for a vibro-impact system excited by colored noise. The non-smooth transformation is used to convert the vibro-impact system into a new system without impact term. With the help of the modified quasi-conservative averaging, the total energy of the new system can be approximated as a Markov process, and the stationary probability density function (PDF) of the total energy is derived. The response PDFs of the original system are obtained using the analytical solution of the stationary PDF of the total energy. The validity of the theoretical results is tested through comparison with the corresponding simulation results. Moreover, stochastic bifurcations are also explored.
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Received: 07 March 2013
Revised: 27 April 2013
Accepted manuscript online:
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PACS:
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02.50.-r
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(Probability theory, stochastic processes, and statistics)
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05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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05.40.Ca
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(Noise)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11172233, 10932009, and 11202160) and the Natural Science Foundation of Shaanxi Province, China (Grant No. 2012JQ1004). |
Corresponding Authors:
Li Chao
E-mail: xgdlc2011@163.com
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Cite this article:
Li Chao (李超), Xu Wei (徐伟), Wang Liang (王亮), Li Dong-Xi (李东喜) Stochastic responses of Duffing–Van der Pol vibro-impact system under additive colored noise excitation 2013 Chin. Phys. B 22 110205
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