Friction-induced limit cycling deteriorates system performance in a wide variety of mechanical systems. In this paper, we study the way in which essential friction characteristics affect the occurrence and nature of friction-induced limit cycling in flexible rotor systems. This study is performed on the level of both numerical and experimental bifurcation analyses. Hereto, an experimental drill-string set-up is used. The synthesis of these numerical and experimental results confirms that friction-induced limit cycling is due to a subtle balance between a velocity weakening characteristic of the friction (Stribeck effect) at lower velocities and viscous friction at higher velocities. Moreover, it is shown how these essential friction characteristics depend on physical conditions such as temperature and normal forces in the frictional contact in the experimental set-up.
- Design Engineering Division and Computers and Information in Engineering Division
Friction-Induced Limit Cycling in Flexible Rotor Systems: An Experimental Drill-String System
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van de Wouw, N, Nijmeijer, H, & Mihajlovic´, N. "Friction-Induced Limit Cycling in Flexible Rotor Systems: An Experimental Drill-String System." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Long Beach, California, USA. September 24–28, 2005. pp. 1289-1298. ASME. https://doi.org/10.1115/DETC2005-84487
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