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Dynamical elastic contact of a rope with the ground

Gregory Kozyreff* and Benoît Seron

  • Optique Nonlinéaire Théorique, Université libre de Bruxelles (U.L.B.), CP 231, Campus de la Plaine, 1050 Bruxelles, Belgium

  • *gregory.kozyreff@ulb.be
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Phys. Rev. Research 3, L022026 – Published 21 June, 2021

DOI: https://doi.org/10.1103/PhysRevResearch.3.L022026

Abstract

A rope laid on the ground with one end subjected to time-dependent forcing is proposed as a prototypical elastic dynamical contact problem, which we study analytically, numerically, and experimentally. The dynamics is governed by an infinite set of linear and nonlinear resonances. In the limit of weak bending stiffness, the fundamental frequency is found to be independent of the rope tension. A transition between a radiation-less and a wave radiating state occurs via a series of grazing bifurcations, whereby new contacts between the rope and the ground are formed. The grazing bifurcations form overlapping Arnold tongues in the frequency-amplitude parameter space. Finally, for ropes with large bending stiffness and when the geometric nonlinearity is important, bistability is observed between several wave-making regimes.

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Phys. Rev. Research 3, L022026– Published 21 June, 2021
  • Received 6 October 2020
  • Revised 20 January 2021
  • Accepted 6 May 2021
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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