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1 LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China
2 Center for Micro and Nano Systems, The Chinese University of Hong Kong, Shatin,
N.T., Hong Kong SAR, China
| 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 micro/nano-scale and should not be ignored in shallow nanoindentation. |
full paper (pdf, 140 Kb)