Effect of Work of Adhesion on Nanoindentation

摘要

Three adhesion contact models, JKR (Johnson-Kendall-Roberts), DMT (Derjaguin-Muller-Toporov) and MD (Maugis-Dugdale) are compared with the Hertz model in dealing with the nano-contact problems. It has been shown that the dimensionless load parameter, P~=P/(πΔγR), and the transition parameter, λ, have significant influences on the contact stiffness (contact area) at microano-scale and should not be ignored in shallow nanoindentation.