experimental investigation of rolling element bearing with

Load Distribution in a Rolling Element Bearing under

External load in a bearing is transferred from one race to another race through the rolling elements In the present work an investigation has been made to estimate the load on a rolling element in a bearing subjected to dynamic loading The dynamic loading in the present study included harmonic and periodic loadings which are deterministic functions of time

STABILITY OF INTERSHAFT SQUEEZE FILM DAMPERS A

2014-9-24bearing loading especially for the bearing loading at the location of the intershaft damper and adjacent rotor bearing supports In reference 7 Alderson conducted an experimental investigation on a two spool rig with an intershaft squeeze film damper The oil film in his damper was also rotating at the speed of the inner (LP) rotor

A dynamic model to predict the occurrence of skidding in

also available in the literature Hirano [10] carried out an experimental investigation on the ball motion inside an axially loaded angular contact ball bearing and found that the gross-sliding of rolling-elements occurs when the value of the parameter zF c=F aexceeds 0 1 where z F cand F a

Wear in Rolling Element Bearings and Gears

2020-8-16Rolling element bearing surface fatigue is characterized by spalling It starts after some variable time of service as embryonic particles that are liberated from the surface of a race or rolling element in the load zone Surface fatigue leaves craters that act as stress concentration sites "An Experimental Investigation of Gear Spalling

A nonlinear dynamic model of the vibration response of

2017-5-9At the time 1720 samples there is an increase of load on the leading rolling element 6 and lagging rolling element 4 while the load is reduced on the 5th rolling element The stressing and de-stressing of the 4th and 6th rolling elements introduces low frequency content in the vibration signal

The importance of bearing stiffness and load when

2019-4-7The process of re-loading the rolling element between the raceways causes parametric excitations due to rapid changes in the bearing stiffness5 From the analytical work presented by Petersen et al 4 5 the frequency of the oscillation when the rolling element becomes unloaded and when the rolling element

Vibrations in Rotating Machinery

Experimental investigation of non-linear stiffness behaviour of a rolling-element bearing Alexander Haslam Christoph Schwingshackl Luke Muscutt Imperial College London Andrew Rix Matthew Price Rolls Royce Experimental investigation on the static and dynamic characteristics of partially textured journal bearings

Finite Element Analysis and Experimental Study on

As the most important component of moving parts in the wheel set system the rolling bearings' performance is the key to the safety of locomotive running In this paper the finite element model of rolling bearing with fault of inner ring stripping was established in ABAQUS the first twenty orders of natural frequency and mode characteristic was analyzed

An Experimental Investigation into the Onset of

2019-4-12The onset of smearing damage was studied under controlled conditions in a custom test rig that simulates the passage of a rolling element through loaded and unloaded zones of a rolling bearing The setup includes a spherical roller that is intermittently loaded between two bearing raceways driven at a prescribed speed

Load Distribution in a Rolling Element Bearing under

External load in a bearing is transferred from one race to another race through the rolling elements In the present work an investigation has been made to estimate the load on a rolling element in a bearing subjected to dynamic loading The dynamic loading in the present study included harmonic and periodic loadings which are deterministic functions of time

An analytical and experimental investigation of ball

Factors contributing to the dynamic instability of ball retainers in precision bearings were investigated A real-time rolling-element bearing dynamics simulation was written for rapid evaluation of key bearing design factors This code permits economic screening of a large number of bearing geometric parameters as a prelude to other more comprehensive dynamic bearing codes

Condition Monitoring of Induction Motor Ball Bearing

2017-3-30induction motor rolling element-bearing faults have been carried out using vibration monitoring AE and shock pulse along with stator current harmonics measurements Experimental investigation has been carried out to study the changes in these parameters for bearings in good condition and with simulated defects in the outer race of the bearings

Modeling and experimental study of power losses in a

2020-4-17The proposed model is characterized by a high numerical efficiency and allows the investigation of the rolling bearing behavior both under transient and steady conditions A comparison between the experimental and simulated results is also presented in this paper

Experimental Investigation into the Tractive Prerolling

In a rolling element system the period of transition between motion commencement and the attainment of steady state gross rolling and termed prerolling is of common concern to many engineering applications This region is marked by hysteresis friction behavior with a characteristic friction-displacement curve which is in particular relevant to motion characterization and control issues

An experimental based assessment of the deviation of the

2020-2-29the expertise obtained in the experimental activity 1 Introduction Localized faults on a rolling element bearing are generally detected by identifying specific components in vibration signals measured on the casing of the machine where the device is mounted

Simulation and experimental analysis of rolling

2018-10-1Rolling element bearing faults are simulated on this test rig by replacing the main shaft bearing with fault bearings The main shaft bearing is using a NF206EM cylindrical roller bearing Bearing faults are artificially made by grooving on the surface of the outer race the inner race and one of the rollers The experimental signals of the

A dynamic model to predict the occurrence of skidding in

also available in the literature Hirano [10] carried out an experimental investigation on the ball motion inside an axially loaded angular contact ball bearing and found that the gross-sliding of rolling-elements occurs when the value of the parameter zF c=F aexceeds 0 1 where z F cand F a

Reliable fault diagnosis of bearings with varying

2018-5-25Determining the optimal features that are invariant under changes in the rotational speed variations of rolling element bearings is a challenging task To address this issue this paper proposes an acoustic emission (AE) analysis-based bearing fault diagnosis invariant under fluctuations of rotational speeds using envelope spectrums (ES) and a convolutional neural network (CNN)

Publications

Experimental testing on a rolling element bearing commonly used in the railway industry and having a line spall machined on its outer raceway was undertaken The numerically modelled vibration response obtained using the FE model of the rolling el- ement bearing was compared with the experimentally measured data and a favourable agreement

Investigation on Effect of defect on Cylindrical Roller

Abstract — Rolling element bearings are commonly used components in machinery for a wide range of applications This work represents investigation of performance of cylindrical roller bearing In this work lateral defect on outer race is focused and size of defect is varied during experimentation

Reliable fault diagnosis of bearings with varying

2018-5-25Determining the optimal features that are invariant under changes in the rotational speed variations of rolling element bearings is a challenging task To address this issue this paper proposes an acoustic emission (AE) analysis-based bearing fault diagnosis invariant under fluctuations of rotational speeds using envelope spectrums (ES) and a convolutional neural network (CNN)

Experimental investigation of unbalance and

Patel T Darpe A Experimental investigations on vibration response of misaligned rotors Mechanical Systems and Signal Processing Vol 23 2009 p 2236-2252 Jalan A Mohanty A R Model based fault diagnosis of a rotor-bearing system for misalignment and unbalance under steady-state condition Journal of Sound and Vibration Vol 327

An investigation into vibrations excited by discrete

As a rolling element passes through a discrete fault a periodic forcing function is produced that excites oscillations of the bearing and the structure that surrounds it This forcing function is the source and the characteristic shape of one period describes the form of the source The results of the experimental investigation are further

Experimental Study of Cage Imbalance and Wear in Deep

2017-5-13Experimental Study of Cage Imbalance and Wear in Deep Groove Ball Bearing Under Cryogenic Environments TRACK OR CATEGORY Rolling Element Bearings II (Session 6C): Rolling Element Bearing Dynamics AUTHORS AND INSTITUTIONS Yongbok Lee a* Bokseong Choe a Jaeseung Byun a Jeonkook Lee b