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On the impact of superimposed vibrations on the onset of friction‐induced oscillations
Author(s) -
Kapelke Simon,
Seemann Wolfgang
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800206
Subject(s) - vibration , stiction , mechanics , materials science , coulomb friction , coupling (piping) , dynamical friction , dry friction , excitation , transverse plane , quenching (fluorescence) , physics , structural engineering , acoustics , nonlinear system , composite material , engineering , optics , nanotechnology , microelectromechanical systems , quantum mechanics , fluorescence
The reduction of effective frictional forces by superimposing vibrations is referred to as vibrational smoothing of dry friction and has been subject of numerous publications. Focussing on the impact of longitudinal vibrations and using simple Coulomb friction modelling, high‐frequency vibrations have been shown to change the non‐smooth characteristics of dry friction into a viscous‐like behaviour. Consequently, providing an appropriate excitation, friction‐induced vibrations due to decreasing friction‐velocity characteristics or non‐conservative coupling can be quenched. Among longitudinal excitation, also transverse vibrations have been shown to smooth the effective friction‐velocity characteristics. However, their influence on friction‐induced oscillations has not been discussed so far, such that the impact of superimposed transverse vibrations on decreasing friction‐velocity characteristics and non‐conservative coupling is investigated. Using an elasto‐plastic friction model, the influence of contact compliance and stiction on quenching friction‐induced vibrations is discussed, showing both quantitative and qualitative effects on the results.