A fractal expansion of a three dimensional elastic-plastic multi-scale rough surface contact model

作者：Goedecke A^*; Jackson R L; Mock R

来源：Tribology International, 2013, 59: 230-239.

DOI：10.1016/j.triboint.2012.02.004

• Contact mechanics
• Fractal
• Rough surfaces
• Analysis and models

This work presents a fractal contact model for nominally flat rough surfaces and its analytical solution. Based on the non-statistical multi-scale model of Jackson and Streator, the model investigates the resolution-dependent contact area. A hierarchy of scales is constructed from a fractal surface description, based on the power spectral density of the surface roughness. In contrast to other fractal contact models, the concept of asperities is retained. Elasto-plastic deformation effects are included by virtue of an appropriate asperity model. The analytical solution yields a concise description of the resolution-dependent progression of fractal contact, decoupling the asperity physics from texture influence.

• 出版日期2013-3