In this paper, we study the relationship between the pull-off force and the transition parameter (or Tabor number) as well as the variation of the pull-off radius with the transition parameter in the adhesion elastic contact. Hysteresis models are presented to describe the contact radius as a function of external loads in loading and unloading processes. Among these models, we verified the hysteresis model from Johnson–Kendall–Roberts theory, based on which the calculated results are in good agreement with experimental ones.
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Zheng et al. (2004) studied this question.