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RESEARCH PAPERS

An Element-Free Galerkin-Finite Element Coupling Method for Elasto-Plastic Contact Problems

[+] Author and Article Information
Tianxiang Liu, Geng Liu

Department of Mechanical Engineering, Northwestern Polytechnical University, Xi’an, 710072, PR China

Q. Jane Wang

Department of Mechanical Engineering, Northwestern University, Evanston, Illinois 60208

J. Tribol 128(1), 1-9 (Dec 14, 2005) (9 pages) doi:10.1115/1.1843134 History: Received December 11, 2002; Revised May 12, 2004; Online December 14, 2005
Copyright © 2006 by ASME
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References

Figures

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A deformable body in contact with a rigid plane
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Background cell quadrature
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Arrangement of nodes placing in the cylinder. (a) 14-cylinder (model I). (b) 12-cylinder (model II).
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Contact pressures of four cases in the initial analysis
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Numerical results influenced by the number of Gauss integration points. (a) Relative errors of contact pressures. (b) Total calculation time.
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Numerical results influenced by the size of the support of the weight function. (a) Relative errors of contact pressures. (b) Total calculation time.
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Comparison of the relative errors of the von Mises stresses of different selection of dm
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An elasto-plastic stress–strain relationship
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Contact pressures for a cylinder in contact with a rigid plane
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Stress distributions along the depth of the centerline of the cylinder. (a) σy=600 MPa. (b) σy=1200 MPa.
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Contact of a rough surface with a smooth plane analyzed by the OEPP and NEPP models under an applied load of P=50 N/mm. (a) The original surface profile. (b) Nondimensional contact pressures. (c) Nondimensional deformed surfaces.
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Nondimensional contact pressures and von Mises stress contours in the meshless region (applied load; P=50 N/mm, rms roughness: 0.16 μm). (a) From the NEPP model. (b) From the EPLS model (ET=0.1E).
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Nondimensional contact pressures and von Mises stress contours in the meshless region (applied load: P=100 N/mm, rms roughness: 0.16 μm). (a) From the NEPP model. (b) From the EPLS model (ET=0.1E).

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