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TECHNICAL PAPERS

Effect of Residual Stress in Surface Layer on Contact Deformation of Elastic-Plastic Layered Media

[+] Author and Article Information
N. Ye, K. Komvopoulos

Department of Mechanical Engineering, University of California, Berkeley, CA 94720

J. Tribol 125(4), 692-699 (Sep 25, 2003) (8 pages) doi:10.1115/1.1572516 History: Received July 10, 2002; Revised December 11, 2002; Online September 25, 2003
Copyright © 2003 by ASME
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Figures

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Symmetry plane (x=0) of three-dimensional finite element mesh used in the indentation and sliding contact simulations. (The inset at the top of the figure shows the refinement of the mesh adjacent to the contact surface.)
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Comparison of finite element and analytical results of (a) von Mises equivalent stress and (b) first principal stress at the surface of an elastic homogeneous medium in contact with a rigid sphere. (The analytical results for f=0 are from Refs. 14, 15 and for f=0.1, 0.25, and 0.5 from Ref. 16.)
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Maximum von Mises equivalent stress and maximum first principal stress versus residual stress for elastic homogeneous half-space subjected to Hertzian contact loading
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Maximum von Mises equivalent stress in the layer of an elastic-plastic layered medium in contact with a rigid sphere versus residual stress due to (a) indentation and unloading, and (b) sliding and unloading for f=0.25 and 0.5
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Maximum equivalent plastic strain in the layer of an elastic-plastic layered medium in contact with a rigid sphere versus residual stress due to sliding for f=0.25 and 0.5
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Maximum first principal stress in the layer of an elastic-plastic layered medium in contact with a rigid sphere versus residual stress due to (a) indentation and unloading, and (b) sliding and unloading for f=0.25 and 0.5
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Maximum von Mises equivalent stress in the substrate of an elastic-plastic layered medium in contact with a rigid sphere versus residual stress due to indentation and sliding followed by unloading for f=0.25 and 0.5
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Maximum equivalent plastic strain in the substrate of an elastic-plastic layered medium in contact with a rigid sphere versus residual stress due to (a) indentation and (b) sliding for f=0.25 and 0.5
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Maximum first principal stress in the substrate of an elastic-plastic layered medium in contact with a rigid sphere versus residual stress due to (a) indentation and unloading, and (b) sliding and unloading for f=0.25 and 0.5
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Comparison of plastic zones (dark regions) in a layered medium due to sliding against a rigid sphere for f=0.25 and σr/p0 equal to (a) 1.88, (b) 1.43, (c) 0.95, (d) 0.49, (e) 0, (f) −0.51, (g) −1.04, and (h) −1.60
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Comparison of plastic zones (dark regions) in a layered medium due to sliding against a rigid sphere for f=0.5 and σr/p0 equal to (a) 1.88, (b) 1.43, (c) 0.95, (d) 0.49, (e) 0, (f ) −0.51, (g) −1.04, and (h) −1.60

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