A thermomechanical analysis of elasto-plastic bodies is a necessary step toward the understanding of tribological behaviors of machine components subjected to both mechanical loading and frictional heating. A three-dimensional thermoelastoplastic contact model for counterformal bodies has been developed, which takes into account steady state heat flux, temperature-dependent strain hardening behavior, and interaction of mechanical and thermal loads. The fast Fourier transform and conjugate gradient method are the underlying numerical algorithms used in this model. Sliding of a half-space over a stationary sphere is simulated with this model. The friction-induced heat is partitioned into two bodies based on surface temperature distributions. In the simulation, the sphere is considered to be fully thermoelastoplastic, while the half-space is treated to be thermoelastic. Simulation results include surface pressure, temperature rise, and subsurface stress and plastic strain fields. The paper also studies the influences of sliding speed and thermal softening on contact behaviors for sliding speed ranging three orders of magnitude.
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October 2008
Research Papers
Thermomechanical Analysis of Elastoplastic Bodies in a Sliding Spherical Contact and the Effects of Sliding Speed, Heat Partition, and Thermal Softening
W. Wayne Chen,
W. Wayne Chen
Department of Mechanical Engineering,
Northwestern University
, Evanston, IL 60208
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Q. Jane Wang
Q. Jane Wang
Department of Mechanical Engineering,
Northwestern University
, Evanston, IL 60208
Search for other works by this author on:
W. Wayne Chen
Department of Mechanical Engineering,
Northwestern University
, Evanston, IL 60208
Q. Jane Wang
Department of Mechanical Engineering,
Northwestern University
, Evanston, IL 60208J. Tribol. Oct 2008, 130(4): 041402 (10 pages)
Published Online: August 6, 2008
Article history
Received:
January 18, 2008
Revised:
June 14, 2008
Published:
August 6, 2008
Citation
Chen, W. W., and Wang, Q. J. (August 6, 2008). "Thermomechanical Analysis of Elastoplastic Bodies in a Sliding Spherical Contact and the Effects of Sliding Speed, Heat Partition, and Thermal Softening." ASME. J. Tribol. October 2008; 130(4): 041402. https://doi.org/10.1115/1.2959110
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