Abstract
Model parameters are extracted from the experimental results in a companion paper (Shroff and de Boer in Tribol Lett 63(3):31, 2016) according to rate-state friction theory. Perturbation theory and state-space modeling are used to compare predictions for the stick–slip to steady sliding bifurcation line with experimental results using these extracted parameters. The line is well predicted in k/N b − v p space. The average behavior of the stick–slip oscillations is in good agreement with the state-space simulations. We estimate the memory length d c using a state-space model and find that it lies between the monoplane chain length and the average asperity diameter. This work indicates that rate-state theory extends from the µm scale to the nm scale in the few contacts situation.
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Acknowledgments
This work was supported by the National Science Foundation (NSF) under Grant CMMI 1030322. The work of S.S.S. was supported by the NSF Graduate Research Fellowship Program. The authors thank the staff of Sandia National Laboratories Microelectronics Development Laboratory for the fabrication of the devices used in these experiments and one of the reviewers for pointing out the applicability of Eq. (10).
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Shroff, S.S., de Boer, M.P. Full Assessment of Micromachine Friction Within the Rate-State Framework: Theory and Validation. Tribol Lett 63, 39 (2016). https://doi.org/10.1007/s11249-016-0724-5
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DOI: https://doi.org/10.1007/s11249-016-0724-5