Experimentální studium tření v poddajném kontaktu: Vliv konfigurace, viskoelasticity a provozních podmínek

Experimental investigation of friction in compliant contact: The effect of configuration, viscoelasticity and operating conditions

článek v časopise ve Web of Science, Jimp

en

This work investigates the effects of kinematic conditions, configuration, viscoelasticity, and lubricant viscosity on friction in lubricated compliant contacts. Experimental data were also used to develop a numerical simulation capable of predicting fluid friction in compliant contacts. Mini Traction Machine (MTM) in the ball-on-disc configuration was used to successfully gain insight into the behaviour of compliant contacts, allowing the investigation of the mentioned effects. The findings have confirmed that viscoelastic effects are present in all configurations, being soft-on-hard (S/H), hard-on-soft (H/S) and soft-on-soft (S/S), where they seem to be more profound in the configurations using compliant discs. The experimental data also suggest that the slide-to-roll ratio affects rolling friction in all configurations which is contrary to current literature.

Tato práce zkoumá vliv kinematických podmínek, konfigurace, viskoelasticity a viskozity maziva na tření v mazaných poddajných kontaktech. Experimentální data byla použita k vývoji numerické simulace schopné predikovat kapalinové tření v poddajných kontaktech. Ke experimentálnímu zkoumání těchto kontaků bylo použito zařízení Mini Traction Machine (MTM) v konfiguraci ball-on-disc, které umožňuje stanovení zmíněných vlivů. Zjistění potvrdila, že viskoelasticita se projevuje ve všech konfiguracích, tedy soft-on-hard (S/H), hard-on-soft (H/S) a soft-on-soft (S/S), nicméně viscoelasticita se významěji projevuje u konfigurací s poddajným diskem. Experimentální data naznačují, že slide-to-roll ratio ovlivňuje valivé tření pro všechny konfigurace, což je v rozporu se současnou literaturou.

This work investigates the effects of kinematic conditions, configuration, viscoelasticity, and lubricant viscosity on friction in lubricated compliant contacts. Experimental data were also used to develop a numerical simulation capable of predicting fluid friction in compliant contacts. Mini Traction Machine (MTM) in the ball-on-disc configuration was used to successfully gain insight into the behaviour of compliant contacts, allowing the investigation of the mentioned effects. The findings have confirmed that viscoelastic effects are present in all configurations, being soft-on-hard (S/H), hard-on-soft (H/S) and soft-on-soft (S/S), where they seem to be more profound in the configurations using compliant discs. The experimental data also suggest that the slide-to-roll ratio affects rolling friction in all configurations which is contrary to current literature.

Poddajný kontakt; Tření; Provozní podmínky; Viskoelasticita

Compliant contact; Friction; Operating conditions; Viscoelasticity

01.01.2022

Elsevier

Amsterdam, Nizozemsko

0301-679X

165

1

107340–107340

11