1. Elastic–Plastic Spherical Contact Modeling Including Roughness Effects
- Author
-
Li, L., Etsion, I., and Talke, F. E.
- Subjects
Material Science ,Nanotechnology ,Physical Chemistry ,Theoretical and Applied Mechanics ,Surfaces and Interfaces, Thin Films ,Tribology, Corrosion and Coatings ,Contact mechanics ,Spherical contact ,Rough surface ,Plasticity index - 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.
- Published
- 2010