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Semi-deterministic chemo-mechanical model of boundary lubrication
Joel Andersson1, Roland Larsson, Andreas Almqvist
1Division of Machine Elements, LuleA University of Technology, Sweden.
Faraday Discussions
|January 5, 2013
Summary
A new model simulates tribofilm growth by combining chemistry and contact mechanics. This tribology model reveals that tribofilms grow in patches on rough surfaces, aiding in understanding surface interactions.
Area of Science:
- Tribology and surface engineering.
- Computational mechanics and materials science.
Background:
- Tribofilm formation is crucial for wear protection in mechanical systems.
- Understanding tribofilm growth on rough surfaces requires integrated models.
Purpose of the Study:
- To develop and validate a computational model for tribofilm growth.
- To analyze the influence of contact mechanics and chemistry on tribofilm formation.
- To investigate tribofilm behavior on rough surfaces.
Main Methods:
- Development of a tribofilm growth model.
- Integration with numerical contact mechanics tools.
- Model calibration using experimental data.
- Application to simulations of rough surfaces under different contact conditions.
Main Results:
- The model successfully simulates tribofilm growth.
- Tribofilm formation was analyzed for three distinct contact scenarios.
- Short-term tribofilm growth was characterized.
- Results indicate that tribofilms grow in a patchy manner.
Conclusions:
- The developed model provides a tool for analyzing tribofilm growth on rough surfaces.
- The interplay between chemistry and contact mechanics significantly influences tribofilm morphology.
- The findings enhance the understanding of surface interactions in tribological systems.
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