Abstract
AbstractWe consider adhesion of (macroscopically) flat-ended rigid indenters which face surface is superimposed with a short wave-length waviness as a simple model for roughness in a contact and an elastic body coated with a soft elastic layer. The soft layer has ambivalent influence on the adhesion strength: (a) due to softness, it facilitates the formation of complete contact, thus essentially increasing the adhesive strength; (b) on the other hand, the theoretical strength in a complete contact decreases because of the small elasticity. We investigate the critical thickness of the surface soft layer for achieving the maximum adhesive strength of the contact. We find that the properties of adhesive contact are changing not continuously with the thickness of the layer and find the corresponding critical values separating different modes of adhesive behavior.KeywordsAdhesionJKR theoryRoughness Nominally flat-ended cylinderSoft elastic layer
Published Version
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