A three-dimensional numerical model is presented to investigate the quasi-static sliding contact behavior of layered elastic/plastic solids with rough surfaces. The model is applicable for both single-asperity contact and multiple-asperity contacts. The surface deformation is obtained based on a variational principle. The surface and subsurface stresses in the layer and the substrate are determined with a Fast Fourier transformation (FFT) based scheme and von Mises and principal tensile stresses are computed accordingly. Contact statistics, such as fractional contact area, maximum and relative meniscus force are predicted. The results are used to investigate the effect of the contact statistics on friction, stiction, and wear problems such as debris generation, brittle failure, and delamination of layered media. Optimum layer parameters are identified. It allows the specification of layer properties, according to the contact statistics, to reduce friction, stiction, and wear of materials. A normalization procedure is presented to apply the results on various combinations of surface roughness, material properties, and normal load.
Sliding Contact Analysis of Layered Elastic/Plastic Solids With Rough Surfaces
Contributed by the Tribology Division of The American Society of Mechanical Engineers for presentation at the STLE/ASME Tribology Conference, San Francisco, CA, October 22–24, 2001. Manuscript received by the Tribology Division February 28, 2001; revised manuscript received May 22, 2001. Associate Editor: G. G. Adams.
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Peng , W., and Bhushan, B. (May 22, 2001). "Sliding Contact Analysis of Layered Elastic/Plastic Solids With Rough Surfaces ." ASME. J. Tribol. January 2002; 124(1): 46–61. https://doi.org/10.1115/1.1401018
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