Figure 4
From: Novel Friction Law for the Static Friction Force based on Local Precursor Slipping
Macroscopic static friction coefficient µM vs. critical precursor length lc.
The dependence of the macroscopic static friction coefficient µM is shown for the critical propagation length of the precursor lc, which is normalized by the slider length L. The broken line shows the fitting curve obtained by Eq. (4). The inset shows the dependence of lc/L on the loading force W. The experimental parameters are V = 0.4 mm/s and h = 0 mm.
