Results 21 to 30 of about 61,425 (289)

On the stability of Jeffcott rotor in fluid-film bearings

Computer Assisted Methods in Engineering and Science, 2023
For some combinations of rotor speed and radial load, the pressure field of bearing fluid can perturb the pure rotational motion and disturb the normal operation of a rotating machine.
Milenko Stegić, Nikola Vranković, Nenad Kranjčević   +2 more
doaj  

Piezo-Viscous Dependency and Surface Roughness Effects on the Squeeze Film Characteristics of Non-Newtonian Micropolar Fluid in Conical Bearings

Tribology Online, 2018
In this paper, combined effects of piezo-viscous dependency and surface roughness on the squeeze film characteristics of non-Newtonian micropolar fluid in conical bearings are presented.
Pentyala Srinivasa Rao, Birendra Murmu, Santosh Agarwal   +2 more
doaj   +1 more source

Balancing of Flexible Rotors Supported on Fluid Film Bearings by Means of Influence Coefficients Calculated by the Numerical Assembly Technique

Energies, 2022
In this paper, a new method for the balancing of rotor-bearing systems supported on fluid film bearings is proposed. The influence coefficients necessary for balancing are calculated using a novel simulation method called the Numerical Assembly Technique.
Georg Quinz, Michael Klanner, Katrin Ellermann   +2 more
doaj   +1 more source

The Effects of Interval Uncertainties on Dynamic Characteristics of a Rotor System Supported by Oil-Film Bearings

Lubricants, 2022
Rotating systems equipped with oil-film bearings are critical and common in many industrial machines. There are various non-random uncertainties in such fluid-lubricated dynamic systems.
Jiaojiao Ma, C. Fu, Zhaoli Zheng, Kuan Lu, Yongfeng Yang   +4 more
semanticscholar   +1 more source

Combined Effects of Viscosity Variation and Surface Roughness on the Squeeze Film Lubrication of Journal Bearings with Micropolar Fluids

Tribology Online, 2014
In this paper, a theoretical study of the combined effects of viscosity variation and surface roughness on the squeeze film performance of journal bearings lubricated with micropolar fluid is made.
Neminath Bhujappa Naduvinamani, Siddangouda Apparao, Archana Kamalakar Kadadi, Shivaraj Nagshetty Biradar   +3 more
doaj   +1 more source

Effect of Cavitation and Temperature on Fluid Film Bearing Using CFD and FSI Technique: A Review

Archives of Computational Methods in Engineering, 2022
Fluid film bearings are well suited for high-speed industrial machineries like turbine generators and marine propulsion systems. Several numerical methods are employed to theoretically investigate the flow phenomenon and performance parameters of journal
H. Kamat, Chandrakant R. Kini, Satish B. Shenoy   +2 more
semanticscholar   +1 more source

State-of-the-art rotordynamic analyses of pumps [PDF]

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021
State-of-the-art analyses for the rotordynamic assessment of pumps and specific requirements for the simulation tools are described. Examples are a horizontal multistage pump with two fluid film bearings in atmospheric pressure, a horizontal submerged ...
Frédéric Gaulard, Joachim Schmied, Andreas Fuchs   +2 more
doaj   +1 more source

Fluid-structure Coupling Simulation Analysis of Angular Contact Ball Bearing

Jixie chuandong, 2021
The lubrication condition of angular contact ball bearings in operation is crucial，and the lubricant directly affects the contact state of rolling bearings. In order to analyze the lubrication condition of angular contact ball bearings and the mechanical
Lanwen Wang, Xuanyu Sheng, Jianbin Luo
doaj  

Study on the performance of journal bearings in different lubricants by CFD and FSI method with thermal effect and cavitation

MATEC Web of Conferences, 2018
This paper used a new transient computational fluid dynamics and fluid–structure interaction method to investigate the journal bearing performance with the effect of thermal and cavitation, to reveal the performance of journal bearing in different ...
Li Hulin, Wang Yanzhen, Zhong Ning, Chen Yonghong, Yin Zhongwei   +4 more
doaj   +1 more source

Multi-physics coupling effect on morphology evolution and lubrication characteristics of oil film in hydrostatic thrust bearing [PDF]

AIP Advances
To address the issues of oil film morphology deviation from theoretical design models and lubrication failure in hydrostatic thrust bearings under high-speed and heavy-load conditions caused by temperature rise and structural deformation, this study ...
Xiaodong Yang, Chenxu Yang, Hongbo Liu, Qifeng Li, Yu Chen, Shouguo Liu   +5 more
doaj   +1 more source