ABSTRACT
Carpick et al. (1999) examined the validity of the JKR and DMT models and presented a generalized combination of both models.
Extensions to dynamic contact problems are given by Roberts & Thomas (1975), Roberts (1988) and Barquins (1992). They showed that the dynamic work of adhesion, which is the energy to separate two surfaces per unit area, can be a multiple of the quasi-static one for viscoelastic materials. Hence, adhesion forces have to be taken into account even in macroscopic systems with dynamic elastomer contacts. Barquins (1992) and Johnson and Greenwood (2002) explain the increase in the adhesion effect with the separation velocity. They describe the separation as a crack process on the surface of the viscoelastic material.
