Greenwood-Tripp model: A bibliometric overview

The Greenwood-Tripp (GT) model is considered here for setting up a database with all the papers available in Scopus that used this GT model from 1972 up to 2025. After showing how the GT model can be applied for determining the friction force in mixed and boundary lubrication regimes, this database is then analysed by using bibliometric tools implemented in Bibliometrix, ScientoPy, pyBibX and VOSviewer for identifying the trends within the application of the GT model. The resulting bibliometric overview is shown to be suitable for more in-depth research to exploit the GT model further. In this manner, for example, it is demonstrated that the formula aiming to calculate the friction force in mixed and boundary lubrication regimes, respectively, persists to hold universally. However, its main application field nowadays is centred on internal combustion engines, i.e. the ring-cylinder liner tribological system.