Theoretical analysis, infrared and structural investigations of energy dissipation in metals under cyclic loading

Article dans une revue avec comité de lecture
Auteur
PLEKHOV, O.A
249854 Institute of Continuous Media Mechanics of the RAS [ICMM]
ccSAINTIER, Nicolas
ccPALIN-LUC, Thierry
1002421 Institut de Mécanique et d'Ingénierie [I2M]
UVAROV, S. V.
249854 Institute of Continuous Media Mechanics of the RAS [ICMM]
NAIMARK, O.B
249854 Institute of Continuous Media Mechanics of the RAS [ICMM]

URI
http://hdl.handle.net/10985/11194
DOI
10.1016/j.msea.2006.02.462
Date
2007
Journal
Materials Science and Engineering: A

Résumé

The infrared and structural investigations of energy dissipation processes in metals subjected to cyclic loading have given impetus to the development of a new thermodynamic model with the capability of describing the energy balance under plastic deformation. The model is based on the statistical description of the mesodefect ensemble evolution and its influence on the dissipation ability of the material. Constitutive equations have been formulated for plastic and structural strains, which allow us to describe the stored and dissipated parts of energy under plastic flow. Numerical results indicate that theoretical predictions are in good agreement with the experimentally observed temperature data.

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