Abstract
Atomistic simulations are used to test the continuum contact theories on the micro scale. Nominally spherical tips are pressed into a flat substrate. The force-displacement curves obtained contain information about the relationship between the adhesion force and the normal displacement. The indenter size is also taken into consideration. Snapshots of atomistic configurations are used to explain the results. Results show that the adhesion effects are different during the approaching and retrieving processes. Which means different effects of surface interaction and would give different solutions of continuum contact theories. What’s more, the maximum normal displacement (Dmax) has great impact on the pull-off force, accompanied with different dislocation nucleation, movements and annihilation. Also it is found that the position where the maximum pull-off force occurred is related to the maximum normal displacement and the indenter size. It happens earlier with decreased normal displacement and indenter size.
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References
Hertz H (1896) Miscellaneous papers. Macmillan, London, p 146
Leng Y, Yang G, Hu Y, Zheng L (2000) Computer experiments on nano-indentation: a molecular dynamics approach to the elasto-plastic contact of metal copper. Journal of materials science 35(8):2061–2067
Cha PR, Srolovitz DJ, Vanderlick TK (2004) Molecular dynamics simulation of single asperity contact. Acta Mater 52(13):3983–3996
Luan B, Robbins MO (2006) Contact of single asperities with varying adhesion: comparing continuum mechanics to atomistic simulations. Phys Rev E 74(2):026111
Efremov YM, Bagrov DV, Kirpichnikov MP, Shaitan KV (2015) Application of the Johnson–Kendall–Roberts model in AFM-based mechanical measurements on cells and gel. Colloids Surf B 134:131–139
Solhjoo S, Vakis AI (2015) Single asperity nanocontacts: Comparison between molecular dynamics simulations and continuum mechanics models. Comput Mater Sci 99:209–220
Giannakopoulos AE, Venkatesh TA, Lindley TC, Suresh S (1999) The role of adhesion in contact fatigue. Acta Mater 47(18):4653–4664
Johnson KL, Kendall K, Roberts AD (1971) Surface energy and the contact of elastic solids. Proc Royal Soc London A Math Phys Engineering Sci 324(1558):301–313
Derjaguin BV, Muller VM, Toporov YP (1975) Effect of contact deformations on the adhesion of particles. J Colloid Interface Sci 53(2):314–326
Zhao YP, Shi X, Li WJ (2003) Effect of work of adhesion on nanoindentation. Rev Advanc Mater Sci 5(4):348–353
Luan B, Robbins MO (2005) The breakdown of continuum models for mechanical contacts. Nature 435(7044):929
Landman U, Luedtke WD, Burnham NA, Colton R (1990) Atomistic mechanisms and dynamics of adhesion, nanoindentation, and fracture. Science, 248(4954):454–461
Yu N, Polycarpou AA (2004) Adhesive contact based on the Lennard-Jones potential: a correction to the value of the equilibrium distance as used in the potential. J Colloid Interface Sci 278(2):428–435
Si L, Wang X (2014) Nano-adhesion influenced by atomic-scale asperities: A molecular dynamics simulation study. Appl Surf Sci 317:710–717
Fang TH, Chang WY, Huang JJ (2009) Dynamic characteristics of nanoindentation using atomistic simulation. Acta Mater 57(11):3341–3348
Kramer B, Schreiber M, Hoffmann KH (1996) Computational physics. Springer
Lee Y, Park JY, Kim SY, Jun S, Im S (2005) Atomistic simulations of incipient plasticity under Al (111) nanoindentation. Mech Mater 37(10):1035–1048
Foiles SM, Baskes MI, Daw MS (1986) Embedded-atom-method functions for the fcc metals Cu, Ag, Au, Ni, Pd, Pt, and their alloys. Phys Rev B 33(12):7983
Lilleodden ET, Zimmerman JA, Foiles SM, Nix WD (2003) Atomistic simulations of elastic deformation and dislocation nucleation during nanoindentation. J Mech Phys Solids 51(5):901–920
Kelchner CL, Plimpton SJ, Hamilton JC (1998) Dislocation nucleation and defect structure during surface indentation. Phys Rev B 58(17):11085
Johnson KL (1998) Mechanics of adhesion. Tribol Int 31(8):413–418
Gao H, Yao H (2004) Shape insensitive optimal adhesion of nanoscale fibrillar structures. Proc Natl Acad Sci USA 101(21):7851–7856
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This work is supported by The National Natural Science Foundation of China (51210008).
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© 2018 The Minerals, Metals & Materials Society
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Yang, B., Zheng, B. (2018). The Adhesion Force in Nano-Contact During Approaching and Retrieving Processes. In: & Materials Society, T. (eds) TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72526-0_29
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DOI: https://doi.org/10.1007/978-3-319-72526-0_29
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