کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
615399 | 1454856 | 2012 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Predicting friction reliably and accurately in journal bearings – The importance of extensive oil-models Predicting friction reliably and accurately in journal bearings – The importance of extensive oil-models](/preview/png/615399.png)
Within the framework of an attempt to predict friction in journal bearings reliably and accurately, the impact of neglecting the hydrodynamic pressure dependence of the lubricant in the oil-model employed in the simulation is investigated. To this task calculations are carried out with two different oil-models; namely, an extensive oil-model that includes the influence of the hydrodynamic pressure on the lubricant properties, as well as the still commonly used basic oil-model that neglects this dependence. To cover full film lubrication and mixed lubrication with significant metal–metal contact, two different lubricants (SAE40, SAE10) are studied.Calculations are conducted using a validated simulation model for dynamic loads with a maximum of up to 76 MPa that exceed typical main bearing loads found in current automotive ICEs. The results for both oil-models are compared to measurements performed on a journal bearing test rig.We find that the results obtained with both oil-models agree closely with the experimental values only for full film lubrication, while solely the extensive oil-model is able to give also reliable results for the case of mixed lubrication.
► A simulation approach is proposed to predict friction in journal bearings.
► The method covers full film and mixed lubrication.
► Investigation of the role of the lubricant model for friction prediction.
► Comparison of the results to measurements conducted on a journal bearing test-rig.
► The results from the presented model agree closely with the experimental data.
Journal: Tribology International - Volume 48, April 2012, Pages 93–101