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On the computation of Lyapunov exponents for forced vibration of a Lennard–Jones oscillator
Journal article   Peer reviewed

On the computation of Lyapunov exponents for forced vibration of a Lennard–Jones oscillator

Guolai Yang, Jia Lu and Albert C.J Luo
Chaos, solitons and fractals, Vol.23(3), pp.833-841
2005
DOI: 10.1016/j.chaos.2004.05.034

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Abstract

In this paper, we introduce a modified Lyapunov vector method for retrieving the leading Lyapunov exponent for a dynamical system with strong nonlinear forces. Performances of the proposed method and the classical QR method are compared. This method is applied to the computation of Lyapunov exponents of a mechanical oscillator under the influence of van der Waals forces. The advantage of this approach lies in the property of preserving the norm of the solution vector.

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