Abstract
In present study, a fluid-structure interaction (FSI) approach is proposed for predicting the effects of roughness on the performance of hydrodynamically lubricated three-dimensional (3D) journal bearing, taking mechanical deformation effects. The multi-phase cavitation mass flow conservation model is adopted, in which the phase change boundary condition is allowable. The results show that the mechanical deformation effect on bearing performance has been confirmed to be substantial. When the deformation of the structure is considered in calculating the change of film thickness, the bearings carry less load (i.e. 30–70 % smaller depending on the surface roughness value) as compared to the case in which the deformation is neglected. It is also highlighted that the hydrodynamic pressure and load support decrease with surface roughness.
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Acknowledgments
This research is fully supported by RPI-BT (Research Publication International-High Reputation) Grant, No. 387-05/UN7.P4.3/PP/2018. The authors fully acknowledged Institute for Research and Community Services (LPPM) Diponegoro University for the approved fund which makes this important research viable and effective.
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Mohammad Tauviqirrahman is Head of Laboratory for Engineering Design and Tribology at the Engineering Faculty, Diponegoro University, Indonesia. He received his doctoral degree from Twente University, The Netherlands (2013). His research interests include tribology in lubricant and surface modification.
Jamari is a Senior Researcher at Laboratory for Engineering Design and Tribology at the Engineering Faculty, Diponegoro University, Indonesia. He received his doctoral degree from Twente University, The Netherlands (2006). His research area is contact mechanic and biomechanic.
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Tauviqirrahman, M., Ichsan, B.C., Jamari et al. Influence of roughness on the behavior of three-dimensional journal bearing based on fluid-structure interaction approach. J Mech Sci Technol 33, 4783–4790 (2019). https://doi.org/10.1007/s12206-019-0919-4
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DOI: https://doi.org/10.1007/s12206-019-0919-4