VERIFICATION OF RABINOWICZ’ CRITERION BY DIRECT MOLECULAR DYNAMICS MODELING

Andrey I. Dmitriev, Anton Yu. Nikonov, Werner Österle, Bai Cheng Jim

DOI Number
10.22190/FUME190404026D
First page
207
Last page
215

Abstract


In the paper we use direct molecular dynamics modeling to validate the criterion for formation of wear debris proposed by E. Rabinowicz in 1958. A conventional molecular dynamics using a classical Tersoff’s potential was applied to simulate the sliding behavior within a thin film corresponding to a tribofilm formed from silica nano-particles in amorphous-like state. The simulation was carried out by varying the initial temperature and the spatial size of the simulated crystallite. The results show the change in sliding behavior of silica-based tribofilm depending on the temperature and the size parameter of the system under consideration. Thus increasing the temperature provides smooth sliding while at moderate conditions wear process can occur via debris formation. Our estimations show good correlation between predicted critical size of the simulated system and calculated energetic characteristics.

Keywords

Molecular Dynamics, Adhesive Wear, Wear Debris, Critical Size, Surface Microasperities, Thermal Conditions, Shear Resistance Force

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References


Popov, V.L., 2018, Adhesive wear: generalized Rabinowicz’ criteria, Facta Universitatis-Series Mechanical Engineering, 16(1), pp. 29-39.

Popov, V.L., Pohrt, R., 2018, Adhesive wear and particle emission: Numerical approach based on asperity-free formulation of Rabinowicz criterion, Friction, 6(3), pp. 260-273.

Popov, V.L., Popova, E., 2018, 60 year of Rabinowicz’ criterion for adhesive wear, Friction, 6(3), pp. 341-348.

Rabinowicz, E., 1958, The effect of size on the looseness of wear fragments, Wear, 2, pp. 4–8.

Cheng, H., Shuku, T., Thoeni, K., Temppone, P., Luding, S., Magnanimo, V., 2019, An iterative Bayesian filtering framework for fast and automated calibration of DEM models, Computer Methods in Applied Mechanics and Engineering, 350, pp. 268-294.

Österle, W., Dmitriev, A.I., Kloss H., 2012, Does ultra-mild wear play any role for dry friction applications, such as automotive braking?, Faraday Discussions, 156, pp. 159-171.

Dmitriev, A.I., Nikonov, A.Y., Österle, W., 2017, Molecular dynamics sliding simulations of amorphous Ni, Ni-P and nanocrystalline Ni films, Computational Material Science, 129, pp. 231-238.

Aghababaei, R., Warner, D.H., Molinari, J.-F., 2016, Critical length scale controls adhesive wear mechanisms, Nature Communications, 7, pp. 11816/1-11816/8.

Molinari, J.-F., Aghababaei, R., Brink, T., Frerot, L., Milanese, E., 2018, Adhesive wear mechanisms uncovered by atomistic simulations, Friction, 6(3), pp. 245-259.

Dmitriev, A.I., Nikonov, A.Yu., Österle, W., 2016, MD Sliding simulations of amorphous tribofilms consisting of either SiO2 or carbon, Lubricants, 4(3), pp. 1-24.

Tersoff, J., 1988, New empirical approach for the structure and energy of covalent systems, Physical Review B, 37, pp. 6991-7000.

Munetoh, S., Motooka, T., Moriguchi, K., Shintani, A., 2007, Interatomic potential for Si–O systems using Tersoff parameterization, Computational Materials Science, 39(2), 334-339.

Plimpton, S., 1995, Fast parallel algorithms for short-range molecular dynamics, Journal of Computational Physics, 117(1), pp. 1-19.

Stukowski, A., 2010, Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool, Modelling and Simulation in Materials Science and Engineering, 18, pp. 015012/1-015012/7.

Dmitriev, A.I., Österle, W., 2014, Modelling the sliding behaviour of tribofilms forming during automotive braking: impact of loading parameters and property range of constituents, Tribology Letter, 53, pp. 337–351.




DOI: https://doi.org/10.22190/FUME190404026D

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ISSN: 0354-2025 (Print)

ISSN: 2335-0164 (Online)

COBISS.SR-ID 98732551

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