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Paper
Title

Dynamic simulation of a flexible rotor-hydrodynamic bearing model considering oil flow turbulence effects and wear in bearing

Year: 1398
COI: ISAV09_124
Language: EnglishView: 363
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Authors

Ebrahim Tofighi Niaki - School of Mechanical Engineering, Iran University of Science and Technology Narmak, Tehran, ۱۶۸۴۶ IRAN
Pouya Asgharifard, - School of Mechanical Engineering, Iran University of Science and Technology Narmak, Tehran, ۱۶۸۴۶ IRAN
Hamid Ahmadian - School of Mechanical Engineering, Iran University of Science and Technology Narmak, Tehran, ۱۶۸۴۶ IRAN

Abstract:

Hydrodynamic journal bearings are used in rotating systems operating in high speeds and un-der heavy static loads. Since these bearings work at high speeds, the lubricant flow is prone to be in turbulent regime in some locations. Moreover, these bearings experience wear in low speeds when there is not sufficient oil-film to separate the journal surface from the bearing surface. Static and dynamic effects of turbulent flow and geometric imperfection in bearings due to wear are analysed in this work. Wear analysis is performed through modifying the oil-film thickness relation to consider increase in clearance of a worn part of the bearing. Then, the modified Reynolds equation is solved to study the effects induced by turbulent flow and wear. It is seen that turbulent flow reduces maximum hydrodynamic pressure, and, wear causes the rotor to orbit in a lower position. Finally, the unbalance response of the rotor-bearing system is simulated undergoing constant and variable rotating speeds.

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Paper COI Code

This Paper COI Code is ISAV09_124. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/976172/

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If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Tofighi Niaki, Ebrahim and Asgharifard,, Pouya and Ahmadian, Hamid,1398,Dynamic simulation of a flexible rotor-hydrodynamic bearing model considering oil flow turbulence effects and wear in bearing,9th International Conference on Acoustic and Vibration,Tehran,https://civilica.com/doc/976172

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Type of center: دانشگاه دولتی
Paper count: 22,343
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