International Conference on Engineering Vibration, Sofia, Bulgaria, International Conference on Engineering Vibration 2017

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ESCAPE BIFURCATIONS OF A FORCED TRIPLE-WELL POTENTIAL DUFFING OSCILLATOR WITH FUZZY UNCERTAINTY
Ling Hong

Last modified: 2017-05-19

Abstract


Escape bifurcations of a forced triple-well potential system with fuzzy uncertainty are studied by means of the Fuzzy Generalized Cell Mapping (FGCM) method. A fuzzy response is characterized by its topology in the state space and its possibility measure of membership distribution functions (MDFs). A fuzzy bifurcation implies a sudden change both in the topology and in the MDFs. With an increase of the intensity of fuzzy noise, noise-induced escape from each of the potential wells defines two types of bifurcations, namely catastrophe and explosion.