Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 339, Issue 3-4, Pages 311-319Publisher
ELSEVIER
DOI: 10.1016/j.physa.2004.03.030
Keywords
fractional oscillator; dynamic damping; fractional calculus
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A study of sinusoidally forced oscillations of a fractional oscillator shows that the system exhibits a rich variety of damping characteristics. While some aspects of the damping mimic the characteristic features of a damped harmonic oscillator, there are others, which do not find any parallel in the damped harmonic oscillator system. It is clearly demonstrated that the free and forced oscillations of a fractional oscillator are characterized by different damping parameters. While both depend on the fractional index a, the free oscillation damping depends on the natural frequency, omega(0), of the oscillator, the forced oscillation damping depends in addition, on the driving frequency, omega. Furthermore, there is a different power-law tail associated with each of these cases. (C) 2004 Elsevier B.V. All rights reserved.
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