A wear model for rough surfaces based on the ultimate-stress asperity concept

• Autorzy: Abdo J. A. , Al-Yahmadi A. S.
• Konferencja: Third International Tribology Conference ITC 2004
• Języki publikacji: EN

Abstrakty

EN

This work presents the extension of the elastic-plastic contact model to provide theoretical means of estimating the wear due to the mechanical interaction of rough surfaces. In this regard the ultimate-stress asperity concept is introduced. The introduction of ultimate-stress asperity concept leads to the theoretical treatment of wear due to mechanical interaction of asperities. The ultimate-stress asperity concept is introduced to define the level of interference beyond which failure is expected. Two mathematical formulations are presented to provide theoretical estimates of the wear volume. In the first approach it is assumed that a portion of the interference volume is separated from the asperity while in the second approach the entire asperity peak above a certain plane parallel to the mean plane is assumed to be separated from the asperity. Inclusions of the material wear in the calculations of normal and tangential contact forces indicates that elastic and plastic effects play nearly equal roles. It is shown that the wear volume increases by increasing the normal and tangential loads.

Słowa kluczowe

EN

wear model; ultimate-stress asperity; elastic-plastic contact

PL

materiałoznawstwo; elastyczność; powierzchnia chropowata

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2004
• Tom: Vol. 9, no spec.
• Strony: 11--19
• Opis fizyczny: Bibliogr. 19 poz., wykr.

Twórcy

autor

Abdo J. A.

• Sultan Qaboos University, Mechanical and Industrial Engineering Department P.O. Box 33, 123 Al Khoud, OMAN

autor

Al-Yahmadi A. S.

• Sultan Qaboos University, Mechanical and Industrial Engineering Department P.O. Box 33, 123 Al Khoud, OMAN

Bibliografia

• [1] Abdo J, (2004): A new approach in modeling and calculation of rough surfaces contact characteristics. - Journal of Engineering Research, vol.2, pp.80-88.
• [2] Abdo J., Farhang K. (2001): Dynamic of friction and surface roughness. - Joint Applied Mechanics and Materials Summer Conference, University of California, San Diego, California, USA, No.MMC2001-493, pp.92-97.
• [3] Abdo J., farhang K. (2004): Elastic-plastic contact model for rough surfaces based on plastic asperity concept. – To appear in International Journal of Mechanical Science.
• [4] Abdo J., farhang K, Meinhardt G. (2000); Characterization of coefficient of friction in dry contact for control of vibrations in machine systems.- ASME Design and Engineering Technical Conference, Baltimore, Maryland, USA, No.DETC2000/CIE-1146, pp.267-273.
• [5] Archard J.F. (1953): Contact and rubbing of flat surfaces. - J. Appl. Phys., vol.24, No. 8, pp.981-988.
• [6] Blau P.L. (1989): Friction and Wear Transition of Materials Noyes. - Park Ridge, NJ, pp.237-238.
• [7] Bush A.W., Gibson R.D. and Thomas T.R. (1975): The elastic contact of a rough surface. - Wear, vol.35, pp.87-111.
• [8] Chang, W.R., Etsion I. and Bogy D.B. (1986): An elastic-plastic model for the contact of rough surfaces. - Journal of Tribology, vol. 109, pp.257-263.
• [9] Greenwood J.A. and Williamson J.B.P. (1966): Contact of nominally flat surfaces. - Proc. R. Soc., vol.295, pp.300-308.
• [10] Greenwood J.A., and Tripp J.H. (1970): The contact of two rough nominally flat rough surfaces. - Proc. Inst. Mech. Eng., vol. 185, pp.625-633.
• [11] Hailing J. and Nuri K.A. (1975): Contact of Rough Surfaces of Working-Hardening Materials in the Mechanics of Contact between Deformable Bodies. - Delft: University Press (De Pater and Kalker, Eds.).
• [12] Juvinall R.C. and Marshek K.M. (1991): Fundamentals of Machine Component Design. - New York: John Wiley and Sons (2nd Ed.).
• [13] Kraghelskii I.V. and Kombalov V.S. (1969): Calculation of the value of roughness after running-in. - Wear, vol. 14, pp. 137-140.
• [14] Kraghelskii I.V., Dobycin M.N. and Kombalov V.S. (1982): Running-in and equilibrium roughness, In: Friction and Wear Calculation Methods. - Oxford: Pergamon Press.
• [15] Kucharski S., Klimczak T., Polijaniuk A. and Kaczmarek J. (1994): Finite-element model for the contact of rough surfaces. - Wear, vol. 177, pp. 1-13.
• [16] Mulhearn T.O. and Samuels L.E. (1962): The abrasion of metal: a model of the process. - Wear, vol.5, pp.478-498.
• [17] Nayak P.R. (1971): Random process model of rough surfaces. - ASME Journal of Lubrication Technology, vol.93, pp.398-407.
• [18] Samuels L.E. (1978): The mechanism of machining. - Sci. Am., vol.5, No.239, pp.132-152.
• [19] Sexton M.D. (1984): The interactions between two surfaces, II, Copper and Cu-Be sliding on Copper. - Wear, vol.93, pp.261-270.