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Nonlinear Dynamics of the Quadratic-Damping Helmholtz Oscillator

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  • R. Fangnon
  • C. Ainamon
  • A. V. Monwanou
  • C. H. Miwadinou
  • J. B. Chabi Orou

Abstract

In this paper, the Helmholtz equation with quadratic damping themes is used for modeling the dynamics of a simple prey-predator system also called a simple Lotka–Volterra system. From the Helmholtz equation with quadratic damping themes obtained after modeling, the equilibrium points have been found, and their stability has been analyzed. Subsequently, the harmonic oscillations have been studied by the harmonic balance method, and the phenomena of resonance and hysteresis are observed. The primary and secondary resonances have been researched by the multiple-scale method, and the conditions of stability of the amplitudes of oscillations are determined. Chaos is detected analytically by the Melnikov method and numerically using the basin of attraction, the bifurcation diagram, the Lyapunov exponent, the phase portrait, and the Poincaré section. The effects of all the parameters of the system are analyzed in detail, and special emphasis is placed on the new parameters. Through this analysis, the complex phenomena such as hysteresis, bistability, amplitude jump, resonances, and chaos have been obtained. The control of the parameters and the necessary conditions to control the aforementioned phenomena have been found.

Suggested Citation

  • R. Fangnon & C. Ainamon & A. V. Monwanou & C. H. Miwadinou & J. B. Chabi Orou, 2020. "Nonlinear Dynamics of the Quadratic-Damping Helmholtz Oscillator," Complexity, Hindawi, vol. 2020, pages 1-17, November.
  • Handle: RePEc:hin:complx:8822534
    DOI: 10.1155/2020/8822534
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