Shakedown limits for an oscillating,elastic rolling contact with Coulomb friction |
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Authors: | R Wetter VL Popov |
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Institution: | Department of System Dynamics and Friction Physics, Institute for Mechanics, Technische Universität Berlin, 10623 Berlin, Germany |
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Abstract: | We examine experimentally and theoretically the effect of frictional shakedown of a three-dimensional elastic rolling contact. Small oscillations of the local normal forces lead to incremental sliding processes within the area of contact. Consequently, this causes a macroscopic slip motion of the two contacting bodies. If the oscillation amplitude is sufficiently small, the frictional slip ceases after the first few loading periods and a safe shakedown occurs. Otherwise the slip motion is continued and the contact fails. |
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Keywords: | Oscillating rolling contact Coulomb friction Shakedown Micro-slip Ratcheting Method of dimensionality reduction |
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