1. The lubrication characteristics of magnetized journal bearings affected by magnetic fluids considering the elasticity of its liner
- Author
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Rui Hu, Chunxia Xu, Raman Maiti, Catherine Mcquade, and Yue Yang
- Subjects
Mechanical engineering and machinery ,TJ1-1570 - Abstract
In order to investigate the lubrication characteristics of journal bearings with the elasticity of liner affected by magnetic fluids, a theoretic computation model was developed based on magnetic fluids supporting force parameter ( γ ) and couple-stress factor ( L * ). The results indicate that maximum dimensionless pressure peak ( P max ) of oil-film increases with increase in magnetic fluids supporting force parameter ( γ ), couple-stress factor ( L * ) and with decrease in elastic deformation coefficient ( Ce ) of the liner. The loading capacity ( S ) increases with increase in γ , L * and with decrease in Ce particularly in the high eccentricity ratio ( ε ); The attitude angle ( ψ ) of S with different L * and γ decreases in a small range of ε at first, and then increases, it increases with the decrease of Ce and γ , and with the increase of L * , theses phenomena are more obvious for γ at low ε and for L * and Ce at moderate and high ε ; the modified coefficient of friction ( C f ( R / C ) ) decreases with increase in γ , L * and with decrease in Ce ; the side leakage ( Q ) decreases with increase in γ , with decrease in L * and with increase in Ce particularly in the low ( ε ). Moreover, the increase of elastic deformation coefficient ( Ce ) weaken the impacts of γ , L * on the increase of P max , ψ , S , and the decrease of C f ( R / C ) , Q .
- Published
- 2022
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