Scale effect on dry friction during multiple-asperity contact is considered. The coefficient of friction is a sum of the adhesion component, two-body deformation component, three-body deformation (plowing) component, and a so-called ratchet component of friction. These components of the friction force depend on the relevant real area of contact (dependent on roughness and mechanical properties) and relevant shear strength during sliding. A model of rough surface topography based on an empirical power rule for scale dependence of roughness and contact parameters is proposed. The effect of load on contact parameters is also considered. Comparison of the model to experiment data on scale and load dependence of friction is presented.
Issue Section:
Technical Papers
1.
Bhushan, B., 1999, Handbook of Micro/Nanotribology, 2nd Edition, CRC Press, Boca Raton, Florida.
2.
Bhushan, B., 2002, Introduction to Tribology, Wiley, New York.
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Bhushan, B., 2004, Springer Handbook of Nanotechnology, Springer-Verlag, Heidelberg.
1.
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, “Effect of Normal Load on Microscale Friction Measurements
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293
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Bhushan, B., Liu, H., and Hsu, S. M., 2004, “Adhesion and Friction Studies of Silicon and Hydrophobic and Low Friction Films and Investigation of Scale Effects,” ASME J. Tribol., 126, pp. 583–590.
2.
Hurtado
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, and Kim
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Bhushan
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, and Bhushan
, B.
, 1994
, “Atomic-Scale Friction Measurements Using Friction Force Microscopy: Part I—General Principles and New Measurement Technique
,” ASME J. Tribol.
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, pp. 378
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Johnson, K. L., 1985, Contact Mechanics, Clarendon Press, Oxford, UK.
12.
Bhushan, B., and Gupta, B. K., 1997, Handbook of Tribology: Materials, Coatings, and Surface Treatments, Krieger, Malabar, FL (McGraw-Hill, New York, 1991).
13.
Bhushan
, B.
, and Venkatesan
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Field, J. E., ed., 1992, The Properties of Natural and Synthetic Diamond, Academic Press, London.
16.
Bhushan
, B.
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Anonymous, 1959, The Industrial Graphite Engineering Handbook, National Carbon, New York.
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by ASME
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