Affiliation:
1. INM—Leibniz Institute for New Materials 1 , 66123 Saarbrücken, Germany
2. Department of Materials Science and Engineering, Saarland University 2 , 66123 Saarbrücken, Germany
Abstract
While viscoelastic, adhesive contact rupture of simple indenters is well studied, contact formation has received much less attention. Here, we present simulations of the formation of contact between various power law indenters and an adhesive, viscoelastic foundation. For all investigated indenters, we find that the macroscopic relaxation time τ scales approximately with 1/ρ1.8, where ρ is the range of adhesion. The prolongation of contact formation with Tabor parameter is rationalized by the increased dissipation that short-range adhesion causes on a moving crack.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy