Ge, Zheng-Ming; Ou, Chan-Yi Chaos in a fractional order modified Duffing system. (English) Zbl 1132.37324 Chaos Solitons Fractals 34, No. 2, 262-291 (2007). Summary: The chaotic behaviors in a fractional order modified Duffing system are studied numerically by phase portraits, Poincaré maps and bifurcation diagrams. Linear transfer function approximations of the fractional integrator block are calculated for a set of fractional orders in (0, 1], based on frequency domain arguments. The total system orders found for chaos to exist in such systems are 1.8, 1.9, 2.0, and 2.1. Cited in 50 Documents MSC: 37N05 Dynamical systems in classical and celestial mechanics 70K55 Transition to stochasticity (chaotic behavior) for nonlinear problems in mechanics 26A33 Fractional derivatives and integrals 37G99 Local and nonlocal bifurcation theory for dynamical systems 37D45 Strange attractors, chaotic dynamics of systems with hyperbolic behavior Keywords:phase portraits; Poincaré maps; bifurcation diagrams; linear transfer function approximations Software:Sprott's Software PDF BibTeX XML Cite \textit{Z.-M. Ge} and \textit{C.-Y. 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