Abstract
Stress and strain modelling and stress field computer
simulations are today an important tool for systematic
approach and optimisation of tribologically stressed
coated contacts. Modelling illustrates and quantifies the
dominating parameters resulting in crack initiation,
crack growth and failure of coated surfaces. Friction and
its components, adhesive and ploughing friction, are
necessary input parameters in stress modelling. In Finite
Element Method (FEM) modelling the ploughing component is
integrated in the model while the adhesive component
needs to be determined as input value for stress
simulations. This paper presents how adhesive friction is
determined for the TiN (µa = 0.066) and DLC (µa = 0.047)
coatings from experimental friction measurements. The
experimental value is used as an input value in the three
dimensional finite element micro-model that simulates the
spherical tip sliding on a DLC coated flat substrate with
increasing load similar to the conventional scratch test
contact. Based on the numerical contact analysis (FEM)
similar friction evolution compared to the experimental
friction in scratch testing was depicted. However, the
analytical approach resulted in a diverse solution.
| Original language | English |
|---|---|
| Pages (from-to) | 1315-1323 |
| Journal | Wear |
| Volume | 263 |
| Issue number | 7 - 12 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Friction
- Adhesive
- Ploughing
- DLC
- TiN
- FEM modelling
- ProperTune