Journal
JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL
Volume 40, Issue 4, Pages 1671-1676Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1461348421992608
Keywords
Undamped Duffing equation; two-scale transform method; fractal frequency formula; numerical simulation
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This article discusses the increasing importance of nonlinear oscillation in engineering and introduces a simple method proposed by Ji-Huan He to establish a fractal undamped Duffing equation. The two-scale transform method and the fractal frequency formula are used to find the approximate frequency of the fractal oscillator, showing that He's frequency formula is a unique tool for fractal equations.
Nonlinear oscillation is an increasingly important and extremely interesting topic in engineering. This article completely reviews a simple method proposed by Ji-Huan He and successfully establishes a fractal undamped Duffing equation through the two-scale fractal derivative in a fractal space. Its variational principle is established, and the two-scale transform method and the fractal frequency formula are adopted to find the approximate frequency of the fractal oscillator. The numerical result shows that He's frequency formula is a unique tool for the fractal equations.
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