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

PHYSICA D-NONLINEAR PHENOMENA

卷:258

Article

Depouhon, A.^1,2  Denoel, V.¹  Detournay, E.² 

[1] Univ Liege, ArGEnCo, Dept Appl Sci, B-4000 Liege, Belgium

[2] Univ Minnesota, Dept Civil Engn, Minneapolis, MN 55455 USA

关键词: Percussive drilling;    Periodic orbit;    Drifting oscillator;    Impact system;    Piecewise-linear system;    Hybrid system;   

DOI  :  10.1016/j.physd.2013.04.012

来源: Elsevier

【 摘 要 】

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. (c) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free