Numerical simulation of the sliding wear test in relation with the material properties
| Autor: | N. Stalin-Muller, K. Dang Van |
|---|---|
| Přispěvatelé: | Laboratoire de mécanique des solides (LMS), École polytechnique (X)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
Materials science
Contact geometry Stress–strain curve 02 engineering and technology Surfaces and Interfaces Mechanics Numerical simulation Tribology Dissipation 021001 nanoscience & nanotechnology Condensed Matter Physics Sliding wear test Surfaces Coatings and Films Shakedown Stress (mechanics) Material properties 020303 mechanical engineering & transports Contact mechanics 0203 mechanical engineering Mechanics of Materials [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Materials Chemistry Forensic engineering 0210 nano-technology |
| Zdroj: | Wear Wear, Elsevier, 1997, 203-204, pp.180-186. ⟨10.1016/S0043-1648(96)07417-0⟩ |
| ISSN: | 0043-1648 |
| DOI: | 10.1016/S0043-1648(96)07417-0⟩ |
| Popis: | Although many wear criteria have been proposed, none is intrinsic to the materials and to the structures in contact. We propose new computational methods for modelling the wear phenomenon and to improve the meaning of these criteria. To interpret sliding wear experiments, numerical calculations have been performed to estimate the mechanical state in the vicinity of the wear region and to infer the dissipation mechanism activated. Calculations in two and three dimensions are proposed to estimate the stress, and the total and plastic strain cycles near the contact under repeated loadings. A result is the stress and strain amplitudes which are derived for different hertzian loadings based on measured friction coefficients. To evaluate wear and fatigue properties, plastic strain amplitude and dissipation rate are also estimated. The modification induced by wear of the original contact geometry is accounted for following the proposals of Kapoor and Johnson (J. Mech. Phys., Solids, 34 (3) (1992) 223–239). The initial contact geometry (circular) is modified by wear so that the contact surface increases and the contact stress decreases. To account for these effects, computations are made with different geometries and hertzian pressure varying from initial conditions to the stabilized state corresponding to shakedown conditions. The plastic strain amplitude and the rachetting rate evolution are then obtained. |
| Databáze: | OpenAIRE |
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