Results 11 to 20 of about 3,606 (307)
Linear and Nonlinear Performance Analysis of Hydrodynamic Journal Bearings with Different Geometries
Applied Sciences (Switzerland), 2022 In rotor dynamics, a traditional way of representing the dynamics of hydrodynamic bearings is using stiffness/damping coefficients. It is thus necessary to carry out a linearization of hydrodynamic forces around the shaft’s equilibrium position. However,
Diogo Stuani Alves +2 more
exaly +3 more sources
Vehicles, 2023 Modern power engine concepts and environmental restrictions demand oil-free lubrication of rotors, for example, by gas bearings. However, the stiffness and damping properties ruling the rotor’s dynamics are poorly documented for aerodynamic bearings and ...
Katrin Baumann, Hermann Freund
doaj +2 more sources
Numerical analysis and optimization of continuous texture geometries in thermo-hydrodynamic journal bearings [PDF]
Scientific ReportsJournal bearings play a critical role in many engineering systems, where their performance directly affects operational efficiency and reliability. This study investigates the effect of surface texturing on the thermo-hydrodynamic (THD) behavior of ...
Omar A. Keshk +3 more
doaj +2 more sources
Experiments in hydrodynamic grease bearings [PDF]
AIAA Guidance, Control, and Flight Mechanics Conference, 1969 Hydrodynamic conical and spherical spiral grooved grease bearings replacement of gyro ball bearings for extended space ...
Burch, J. L., Broussard, P. H., Jr.
openaire +3 more sources
Development of hydrodynamic micro-bearings [PDF]
Journal of Physics: Conference Series, 2016 This paper describes the modelling and testing of mm-scale hydrodynamic bearings which are being developed to improve the efficiency of a cm-scale turbine energy harvester, whose efficiency was previously limited by poorly lubricated commercial jewel-bearings.
P. Wang +4 more
openaire +2 more sources
LubricantsUsing the Rabinowitsch fluid model, the effects of dilatant fluids (a non-Newtonian factor less than 0) and pseudo-plastic fluids (a non-Newtonian factor greater than 0) on the non-linear stability of hydrodynamic journal bearings is discussed.
Huaiqing Lu, Chunyan Cheng, Zhuxin Tian
doaj +2 more sources
Lubricants, 2021 The vibration behaviour of turbocharger rotors is influenced by the acting loads as well as by the type and arrangement of the hydrodynamic bearings and their operating condition.
Christian Ziese +4 more
doaj +1 more source
Development of a Robust Test Rig for Tilting Pad Journal Bearing Validation
Machines, 2022 Several theoretical models for predicting the performance of tilting pad journal bearings (TPJB) have been developed by the scientific community over the years.
Danilo Alvaro da Silva +2 more
doaj +1 more source
Investigation of the Wear Resistance of a Journal Bearing with Polymer-Coated Grooved Support Ring
Advanced Engineering Research, 2023 Introduction. In modern heavy-loaded friction units, metallopolymer coated bearings operating in the boundary friction mode are widely used. Their successful application is provided by the viscoelastic deformation of these coatings under load.
V. V. Vasilenko +3 more
doaj +1 more source
Surface texturing for hydrodynamic bearings [PDF]
, 2019 In the present thesis the concept of surface texturing, i.e. the intentional introduction of surface features, is investigated as a means of enhancing the tribological performance of hydrodynamic bearings. An in-depth literature review is conducted, outlining the research effort worldwide, analysing the current understandings on how textures can ...
Gropper, Daniel
openaire +1 more source