Thermo-Mechanical Investigations of a Tribological Interface

Jérôme Rivière (1) , Mathieu Renouf (2, 3) , Yves Berthier (1)

1 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]
2 LMGC - Laboratoire de Mécanique et Génie Civil
3 PMMD - Physique et Mécanique des Milieux Divisés

Numerical methods are essential to understand tribological behaviors since it is difficult to measure directly a closed contact or write representative analytical equations. In this paper, a focus on the complexity of a contact is done with the modeling of thermo-mechanical phenomena in connection with tribological triplet (mechanism, first bodies, third body). Discrete element method is chosen to have a dynamic view of a contact and is interesting to represent both damage of first bodies and cohesion of third ones. Thermo-mechanical models are described for first and third-bodies and are adjusted as a function of continuity of the body. Results regarding damage, rheology and thermal effects are studied as a consequence of cohesion of third body and applied energy by the mechanism (pressure, velocity). Because mechanical and thermal behaviors have a narrow but unclear relationship, a balance between local energy (cohesion of third body) and global energy (applied forces by mechanism) is recommended. Keywords Discrete element method (DEM) Á Thermal contact conductance (TCC) Á Damage Á Third body Á Continuous equivalent media

Mots clés: Discrete element method (DEM); Thermal contact conductance (TCC); Damage; Third body; Continuous equivalent media

Domaines: Matériaux; Génie mécanique [physics.class-ph]

Jérôme Rivière, Mathieu Renouf, Yves Berthier. Thermo-Mechanical Investigations of a Tribological Interface. Tribology Letters, 2015, 58, pp.48-59. ⟨10.1007/s11249-015-0523-4⟩. ⟨hal-01233087⟩