A drifting impact oscillator with periodic impulsive loading: Application to percussive drilling

A. Depouhon, V. Denoël, Emmanuel M Detournay

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Percussive drilling is extensively used to drill hard rocks in the earth resource industry, where it performs best compared to other drilling technologies. In this paper, we propose a novel model of the process that consists of a drifting oscillator under impulsive loading coupled with a bilinear force/penetration interface law, together with a kinetic energy threshold for continuous bit penetration. Following the formulation of the model, we analyze its steady-state response and show that there exists a parallel between theoretical and experimental predictions, as both exhibit a maximum of the average penetration rate with respect to the vertical load on bit. In addition, the existence of complex long-term dynamics with the coexistence of periodic solutions in certain parameter ranges is demonstrated.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalPhysica D: Nonlinear Phenomena
Volume258
DOIs
StatePublished - Sep 1 2013

Bibliographical note

Funding Information:
This research was supported by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and by Itasca International Inc. . These supports are gratefully acknowledged.

Keywords

  • Drifting oscillator
  • Hybrid system
  • Impact system
  • Percussive drilling
  • Periodic orbit
  • Piecewise-linear system

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