dc.contributor.author |
Bonet, C. |
dc.contributor.author |
Jeffrey, M.R. |
dc.contributor.author |
Martín, P. |
dc.contributor.author |
Olm, J.M. |
dc.date.accessioned |
2023-03-28T09:12:17Z |
dc.date.available |
2023-03-28T09:12:17Z |
dc.date.issued |
2022-11-25 |
dc.identifier.uri |
http://hdl.handle.net/2072/532559 |
dc.description.sponsorship |
Ministerio de Economía y Competitividad, MINECO; European Regional Development Fund, ERDF: 2017SGR1049, PID2021-123968NB-I00; Agencia Estatal de Investigación, AEI: CEX2020-001084-M, PGC2018-098676-B-100, PID2021-122821NB-I00 |
dc.format.extent |
22 p. |
dc.language.iso |
eng |
dc.publisher |
Elsevier B.V. |
dc.relation.ispartof |
Communications in Nonlinear Science and Numerical Simulation |
dc.rights |
L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: https://creativecommons.org/licenses/by/4.0/ |
dc.source |
RECERCAT (Dipòsit de la Recerca de Catalunya) |
dc.subject.other |
Ageing; Canard; Filippov; Nonsmooth; Slow–fast; Switching; Timescale |
dc.title |
Novel slow–fast behaviour in an oscillator driven by a frequency-switching force |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/publishedVersion |
dc.embargo.terms |
cap |
dc.identifier.doi |
10.1016/j.cnsns.2022.107032 |
dc.rights.accessLevel |
info:eu-repo/semantics/openAccess |
dc.description.abstract |
When an oscillator switches abruptly between different frequencies, there is some ambiguity in deciding how the system should be modelled at the switch. Here we describe two seemingly natural models of a switch in a simple periodically-forced harmonic oscillator, which disagree starkly in their predictions of its long time behaviour. Attempting to resolve the disagreement by ‘regularizing’ the switch not only preserves the disagreement, but shows it increases with time. One of the models corresponds to a conventional ‘Filippov’ description of a nonsmooth system, while the second exhibits a structure that irreversibly ages, developing a number of novel multi-scale behaviours that we believe have not been reported before. These include slow–fast staircases, novel mixed-mode oscillations, and a synchronized canard explosion. These features are proven to exist using asymptotic analysis, but as they involve a slow–fast time-scale separation that increases with time, they lie beyond the reach of numerical methods. © 2022 The Author(s) |