 Forced harmonic vibrations of duffing oscillator with cubic-quintic spring nonlinearitySergey V. Kuznetsov Chaos, Solitons & Fractals, 2025, vol. 199, issue P1 Abstract: The modified Duffing oscillator with cubic-quintic nonlinearity at harmonic force excitations is analysed. Several phenomena are observed, including (i) the possibility for the presence of triple wells in the potential energy; (ii) the finding of a relation between the roots of the potential and nonlinear elastic moduli; (ii) the appearance of two chaotic regimes split by a regular regime; (iii) the occurrence of harmonic and superharmonic oscillations in the regular regime; and (iv) a significant topological difference in the Poincaré sections associated with these chaotic regimes. These observations open the possibility of creating a new type of vibration isolation devices free from viscous or dry friction elements. The analysis is based on constructing potential and solving the equations of motion by the finite difference method in combination with the multiprecision package for long-mantissa computations, enabling stable computations over large time intervals. Keywords: Duffing equation; Nonlinear oscillations; Potential; Energy transfer; Superharmonic regime; Chaos; Energy (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:199:y:2025:i:p1:s096007792500712x DOI: 10.1016/j.chaos.2025.116699 Access Statistics for this article Chaos, Solitons & Fractals is currently edited by Stefano Boccaletti and Stelios Bekiros More articles in Chaos, Solitons & Fractals from Elsevier |
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