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THE EFFECT OF FINAL FRICTION COEFFICIENT ON FRETTING FATIGUE WAVEFORMS
Author(s) -
Rooke D. P.,
Courtney T. J.
Publication year - 1989
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1989.tb00529.x
Subject(s) - rubbing , fretting , friction coefficient , frictional coefficient , constant (computer programming) , materials science , coefficient of friction , mechanics , deformation (meteorology) , structural engineering , composite material , physics , engineering , computer science , programming language
— The waveforms of the frictional forces and the relationship between the frictional forces and the applied forces are derived for a fretting fatigue model in which the coefficient of friction is not constant. This study is a continuation of a previous one in which it was assumed that the coefficient of friction was a constant. In this new model it is assumed that the coefficient of friction between the rubbing surfaces is initially zero and slowly increases to a constant value during the early cycles of the fatigue life. The consequences of this change are examined and the results from the two models compared. It is observed that the two models give different frictional forces if the deformation of the surfaces is elastic, but are identical when non‐linear macroslip occurs on both loading and unloading.