Thermomechanical modelling of dry friction at high velocity applied to a Ti6Al4V-Ti6Al4V tribopair

A semi-analytical model is developed to predict thermal and mechanical responses of the contact surface during the dry friction of Ti6Al4V tribopair at high velocities. This model is achieved by solving thermal and mechanical problems separately, before coupling both interdependent solutions using t...

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Bibliographic Details
Published in:Tribology international 2018-03, Vol.119, p.795-808
Main Authors: Coulibaly, M., Chassaing, G.
Format: Article
Language:English
Subjects:
Adiabatic flow
Computer simulation
Dry friction
Engineering Sciences
Finite element method
Friction
Green's function
Green's functions
High velocities
Materials and structures in mechanics
Mathematical models
Mechanics
Microstructural analysis
Model accuracy
Physics
Semi-analytical model
Shearing
Solid mechanics
Thermomechanical analysis
Titanium base alloys
Tribology
Two dimensional models
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Summary:A semi-analytical model is developed to predict thermal and mechanical responses of the contact surface during the dry friction of Ti6Al4V tribopair at high velocities. This model is achieved by solving thermal and mechanical problems separately, before coupling both interdependent solutions using the dissipation of mechanical work into heat. The thermal problem is solved by Green's function techniques, while the mechanical one is treated by considering the adiabatic shearing process of contact asperities. The accuracy of this new semi-analytical model is first evaluated by comparison with the results of a two-dimensional numerical finite element simulation. Then, the proposed model is adapted to the specific dry friction process considered in this study by means of experimental testing with post-mortem microstructural analysis. •The model is achieved by solving thermal and mechanical problems separately.•The thermal problem is solved by Green's function techniques.•The mechanical problem is treated by considering the adiabatic shearing process.•Coupling of both solutions uses the dissipation of mechanical work into heat.•Heat transfer on the contact surface and coefficient of friction are predicted.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2017.12.004