Naslov
Numerical analysis of lubricated point contacts using the Finite Area Method

Autori
Balatinec, Luka ; Uroić, Tessa ; Škurić, Vanja ; Jasak, Hrvoje

Izvornik
International Journal of Non-Linear Mechanics (0020-7462) 149 (2023); 104314, 18

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Asperity contactReynolds equationLubricated contactOpenFOAMBall-on-disc

Sažetak
Validation of a contact model which is sensitive to the elastoplastic deformation of asperities and rheological changes to the lubricant properties is presented. The contact model was derived using a two-dimensional variant of the Finite Volume Method, the Finite Area Method, and was implemented in foam- extend, an OpenFOAM fork. The contact lubrication model combines a modified Reynolds equation incorporating a cavitation algorithm, a deterministic contact model and a thermal contact model. The final model can be used to analyse lubricant flow and cavitation, changes of lubricant properties, including changes due to temperature variations and non-Newtonian effects, and asperity contact of rough surfaces. The cumulative validation of the aforementioned models was performed on two ball-on-disc test cases, which use two different types of oil (Turbo T9 and T68 oils). The numerical results were validated against experimental measurements for ball-on-disc tribological experiments found in the literature and available numerical data.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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