Adhesive contact: a few comments on cohesive zone models and self-consistency

Etienne Barthel (1)

1 SVI - Surface du Verre et Interfaces

We comment on the use of cohesive zone models in the context of the adhesive contact of spheres. We also propose an alternative derivation of the double Hertz cohesive zone model proposed by Greenwood and Johnson (J. Phys. D - Appl. Phys. 3279 (1998)). Based on this example, and the derivation method we use, we discuss some features of adhesive contact models, with emphasis on the role of the additional, physically motivated, lengthscale introduced by the cohesive zone.

Mots clés: adhesion; contact; JKR; DMT; cohesive zone models; double Hertz model

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Etienne Barthel. Adhesive contact: a few comments on cohesive zone models and self-consistency. The Journal of Adhesion, 2012, 88, pp.55-69. ⟨10.1080/00218464.2011.611057⟩. ⟨hal-00594627⟩