Low degree of freedom approach for predicting friction in elastohydrodynamically lubricated contacts
| Autor: | Andreas Almqvist, Mohammad Shirzadegan, Marcus Björling, Roland Larsson |
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| Rok vydání: | 2016 |
| Předmět: |
Entrainment (hydrodynamics)
Materials science Mechanical Engineering Computation 02 engineering and technology Surfaces and Interfaces Mechanics Multibody system Apparent viscosity 021001 nanoscience & nanotechnology Surfaces Coatings and Films Physics::Fluid Dynamics Shear rate 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Control theory Resource consumption Lubricant 0210 nano-technology Coefficient of friction |
| Zdroj: | Tribology International. 94:560-570 |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2015.10.010 |
| Popis: | A low degree of freedom, semi-analytical model for rapid estimation of the friction coefficient in elastohydrodynamically lubricated contacts was developed and tested. Its estimates are based on the shear rate dependent Carreau equation for the apparent viscosity, together with the hydrodynamic pressure and the temperature of the lubricant. To validate the approach, the model׳s predictions were compared to experimental coefficient of friction measurements acquired using a ball-on-disc test device at various applied loads, entrainment velocities, and slide to roll ratios. The model׳s predictions were in good agreement with the experimental results, showing that it is suitable for use in multibody dynamics analyses where rapid computation of elastohydrodynamic friction is required to minimize computing time and resource consumption. |
| Databáze: | OpenAIRE |
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