Abstract
For a weakly nonlinear oscillator, the frequency domain Volterra kernels, often called the generalized frequency response functions, can provide accurate analysis of the response in terms of amplitudes and frequencies, in a transparent algebraic way. However, a Volterra series representation based analysis will become void for nonlinear oscillators that exhibit subharmonics, and the problem of finding a solution in this situation has mainly been treated by traditional analytical approximation methods. In this paper, a novel method is developed, by introducing a frequency domain subharmonic kernel representation for subharmonic systems subject to a single tone excitation frequency, to allow the advantages and the benefits associated with the traditional frequency domain representations to be applied to severely nonlinear systems that exhibit subharmonic behavior.
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The authors gratefully acknowledge that this work was supported by the Engineering and Physical Sciences Research Council (EPSRC) UK, and a European Research Council Advanced Investigator Award.
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Li, L.M., Billings, S.A. A new frequency domain representation and analysis for subharmonic oscillation. Nonlinear Dyn 70, 1485–1497 (2012). https://doi.org/10.1007/s11071-012-0549-1
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DOI: https://doi.org/10.1007/s11071-012-0549-1