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TECHNICAL PAPERS

Real-Time Observation of the Evolution of Contact Area Under Boundary Lubrication in Sliding Contact

[+] Author and Article Information
Sy-Wei Lo, Sheng-Da Tsai

Department of Mechanical Engineering, National Yunlin University of Science and Technology, Touliu, Taiwan 640

J. Tribol 124(2), 229-238 (Jan 23, 2001) (10 pages) doi:10.1115/1.1387027 History: Received September 19, 2000; Revised January 23, 2001
Copyright © 2002 by ASME
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References

Greenwood,  J. A., and Williamson,  J. B. P., 1966, “Contact of Nominally Flat Surface,” Proc. Roy. Soc., London, Sect. A, A295, pp. 300–319.
Chang,  W. R., Etsion,  I., and Bogy,  D. B., 1987, “An Elastic-Plastic Model for the Contact of Rough Surfaces,” ASME J. Tribol., 110, pp. 50–56.
Halling,  J. I., and Nuri,  K. A., 1988, “The Elastic-Plastic Contact of Rough Surfaces and its Relevance in Study of Wear,” Proc. Inst. Mech. Eng. [H], 202, No. C4, pp. 269–274.
So,  H., and Liu,  D. C., 1991, “An Elastic-Plastic Model for the Contact of Anisotropic Rough Surface,” Wear, 146, pp. 201–218.
Majumdar,  A., and Bhushan,  B., 1991, “Fractal Model of Elastic-Plastic Contact Between Rough Surfaces,” ASME J. Tribol., 113, pp. 1–11.
Majumdar,  A., and Bhushan,  B., 1992, “Elastic-Plastic Contact Model for Bifractal Surfaces,” Wear, 153, pp. 53–64.
Ju,  Y., and Zheng,  L., 1992, “A Full Numerical Solution for the Elastic Contact of Three-Dimensional Real Rough Surfaces,” Wear, 157, pp. 151–161.
Horng,  J. H., 1998, “An Elliptic Elastic-Plastic Asperity Microcontact Model for Rough Surfaces,” ASME J. Tribol., 120, No. 1, pp. 82–88.
Greenwood,  J. A., and Rowe,  G. W., 1965, “Deformation of Surface Asperities During Bulk Plastic Flow,” J. Appl. Phys., 36, pp. 667–668.
Wilson,  W. R. D., and Sheu,  S., 1988, “Real Area of Contact and Boundary Friction in Metal Forming,” Int. J. Mech. Sci., 30, No. 7, pp. 475–489.
Sutcliffe,  M. P. F., 1988, “Surface Asperity Deformation in Metal Forming Processes,” Int. J. Mech. Sci., 30, No. 11, pp. 847–868.
Korzekwa,  D. A., Dawson,  P. R., and Wilson,  W. R. D., 1992, “Surface Asperity Deformation During Sheet Forming,” Int. J. Mech. Sci., 34, No. 7, pp. 521–539.
Sutcliffe,  M. P. F., 1999, “Flattening of Random Rough Surfaces in Metal-Forming Processes,” ASME J. Tribol., 121, No. 3, pp. 433–440.
Kudo,  H., 1965, “A Note on the Role of Microscopical Trapped Lubricant at the Tool-Work Interface,” Int. J. Mech. Sci., 7, pp. 383–388.
Johnson,  K. L., 1968, “Deformation of a Plastic Wedge by a Rigid Flat Die Under the Action of a Tangential Force,” J. Mech. Phys. Solids, 16, pp. 395–402.
Wanheim,  T., Bay,  N., and Petersen,  A. S., 1975, “Ra and the Average Effective Strain of Surface Asperities Deformed in Metal Working Processes,” Wear, 34, pp. 77–84.
Avitzur,  B., Huang,  C. K., and Zhu,  Y. D., 1984, “A Friction Model Based on the Upper-Bound Approach To the Ridge and Sublayer Deformations,” Wear, 95, pp. 59–77.
Komvopoulos,  K., Saka,  N., and Suh,  N. P., 1986, “Plowing Friction in Dry and Lubricated Metal Sliding,” ASME J. Tribol., 108, pp. 301–313.
Bin,  F., and Luo,  Z. J., 1988, “Finite Element Simulation of the Friction Mechanism in Plastic-Working Technology,” Wear, 121, pp. 41–51.
Carter,  W. T., 1994, “A Model for friction in Metal Forming,” ASME J. Tribol., 116, No. 1, pp. 8–13.
Kayaba,  T., and Kato,  K., 1978, “Experimental Analysis of Junction Growth with a Junction Model,” Wear, 51, pp. 105–116.
Azushima,  A., 1995, “Direct Observation of Contact Behavior to Interpret the Pressure Dependence of the Coefficient of Friction in Sheet Metal Forming,” Annals of the CIRP, 44, No. 1, pp. 209–212.
Azushima,  A., Yoneyama,  S., Yamaguchi,  T., and Kudo,  H., 1996, “Direct Observation of Microcontact Behavior at the Interface Between Tool and Workpiece in Lubricated Upsetting,” Annals of the CIRP, 45, No. 1, pp. 205–210.
Azushima,  A., Miyamoto,  J., and Kudo,  H., 1998, “Effect of Surface Topography of Workpiece on Pressure Dependence of Coefficient of Friction in Sheet Metal Forming,” Annals of the CIRP, 47, No. 1, pp. 479–482.
Bech,  J., Bay,  N., and Eriksen,  M., 1998, “A Study of Mechanisms of Liquid Lubrication in Metal Formation,” Annals of the CIRP, 47, No. 1, pp. 221–226.
Lo,  S. W., and Horng,  T. C., 1999, “Surface Roughening and Contact Behavior in Forming of Aluminum Sheet,” ASME J. Tribol., 121, No. 2, pp. 224–233.
Lo,  S. W., and Horng,  T. C., 1999, “Lubricant Permeation from Micro Oil Pits under Intimate Contact Condition,” ASME J. Tribol., 121, No. 4, pp. 633–638.
Bowden, F. P., and Tabor, D., 1964, The Friction and Lubrication of Solids, Part II, Oxford University Press, Oxford.

Figures

Grahic Jump Location
Schematic representation of the experimental apparatus and some details of the geometry of workpiece supporter  
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Comparison between the measured fractional contact area and the theoretical result of Wilson and Sheu’s model 10 in a stationary flattening test. Aluminum sheet with isotropic roughness is used. The flow stress used in the theory is the initial yield stress multiplied by a factor 1.7.
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Microscopic image for aluminum with isotropic roughness
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Microscopic image for aluminum with longitudinal roughness    
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Microscopic image for aluminum with transverse roughness  
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Variation of the contact part (white) and valley (shaded)
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Scratch and adhesive wear for transverse aluminum sheet
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Aluminum sheet with isotropic roughness: CP diagram; Friction force versus sliding distance; fractional contact area versus sliding distance  
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Aluminum sheet with longitudinal roughness: CP diagram; friction force versus sliding distance: fractional contact area versus sliding distance  
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Aluminum sheet with transverse roughness: CP diagram; friction force versus sliding distance; fractional contact area versus sliding distance
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Copper sheet with longitudinal roughness: CP diagram; friction force versus sliding distance; fractional contact area versus sliding distance
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Copper sheet with transverse roughness: CP diagram; friction force versus sliding distance; fractional contact area versus sliding distance
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Relationship between the final junction growth coefficient and the nondimensional mean interface pressure. Material: A=aluminum,B=copper; Roughness: I=isotropic,L=longitudinal,T=transverse; Numbers 10, 60, and 300 represents velocity in mm/min respectively.

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