Abstract
The effect of material properties and surface roughness on the contribution of asperities and sphere bulk displacements to the total displacement of a rough spherical contact is investigated. A dimensionless transition load, above which the contribution of the bulk displacement exceeds the contribution of the asperities displacement, is found as a function of the plasticity index and dimensionless critical interference of the sphere bulk. A criterion is proposed for evaluating the importance of surface roughness in calculating the displacement of a rough spherical contact. Some experimental results with a spherical micro-contact are presented to verify the model.
| Original language | English |
|---|---|
| Pages (from-to) | 357-363 |
| Number of pages | 7 |
| Journal | Tribology Letters |
| Volume | 40 |
| Issue number | 3 |
| DOIs | |
| State | Published - Dec 2010 |
Keywords
- Contact mechanics
- Plasticity index
- Rough surface
- Spherical contact
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