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TECHNICAL PAPERS

Three-Dimensional Finite Element Analysis of Elastic-Plastic Layered Media Under Thermomechanical Surface Loading

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

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

J. Tribol 125(1), 52-59 (Dec 31, 2002) (8 pages) doi:10.1115/1.1497360 History: Received January 29, 2001; Revised May 22, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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Figures

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Cross section (x=0) of three-dimensional finite element mesh used in the thermomechanical sliding contact simulations
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Comparison of finite element and analytical results for (a) σxx, (b) σyy, and (c) σzz stresses at the surface of an elastic homogeneous medium indented by a rigid sphere
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Evolution of temperature at the surface of an elastic homogeneous medium in sliding contact with an elastic sphere (η=1, μ=0.5, and Pe=30)
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Variation of (a) maximum contact pressure and (b) contact radius with maximum temperature at the surface of an elastic-plastic homogeneous medium in sliding contact with an elastic sphere (η=1, μ=0.5, and Pe=30). (Subscript i denotes indentation.)
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Comparison of thermomechanical (η=1) and mechanical (η=0) simulation results for an elastic-plastic homogeneous medium in sliding contact with an elastic sphere (μ=0.5 and Pe=30): (a) von Mises equivalent stress distribution at the surface and (b) evolution of maximum von Mises equivalent stress. (The maximum von Mises equivalent stress due to indentation (t/t0=0) and sliding (t/t0>0) occurs in the subsurface and surface, respectively.)
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Evolution of temperature at the (a) surface (y/h=0) and (b) interface (y/h=−1) of an elastic-plastic layered medium with layer thickness h/R=0.1 and thermal conductivity kL=5.2 W/m⋅K in sliding contact with an elastic sphere (η=1, μ=0.5, and PeL=0.29)
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Effect of Peclet number on maximum temperature at (a) surface (y/h=0) and (b) interface (y/h=−1) of an elastic-plastic layered medium with layer thickness h/R=0.02 in sliding contact with an elastic sphere (η=1 and μ=0.5)
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Effect of layer thickness on maximum temperature at (a) surface (y/h=0) and (b) interface (y/h=−1) of an elastic-plastic layered medium with layer thermal conductivity kL=5.2 W/m⋅K in sliding contact with an elastic sphere (η=1, μ=0.5, and PeL≃0.3)
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Evolution of (a) maximum von Mises equivalent stress and (b) maximum first principal stress in the layer of an elastic-plastic layered medium with layer thickness h/R=0.02, 0.05, and 0.1 and thermal conductivity kL=5.2 W/m⋅K in sliding contact with an elastic sphere (η=1, μ=0.5, and PeL≃0.3). (Open and filled symbols denote the layer surface and interface, respectively.)
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Evolution of (a) maximum equivalent plastic strain and (b) maximum first principal stress in the substrate of an elastic-plastic layered medium with layer thickness h/R=0.02, 0.05, and 0.1 and thermal conductivity kL=5.2 W/m⋅K in sliding contact with an elastic sphere (η=1, μ=0.5, and PeL≃0.3). (Open and filled symbols denote the bulk and interface of the substrate, respectively.)

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