scholarly journals A study of diagnostic signatures of a deep groove ball bearing based on a nonlinear dynamic model

2015 ◽  
Author(s):  
Ibrahim Rehab ◽  
Xiange Tian ◽  
Fengshou Gu ◽  
Andrew D. Ball
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Ball Bearing ◽  
Nonlinear Dynamic Model ◽  
Deep Groove ◽  
Deep Groove Ball Bearing

High frequency vibration analysis of ball bearings under radial loads

2016 ◽  
Vol 230 (4) ◽  
pp. 579-588
Author(s):  
Yang Zhao ◽  
Guihua Dong ◽  
Heng Liu ◽  
Fengtao Wang ◽  
Meng Li ◽  
...  
Keyword(s):  
Dynamic Model ◽  
High Frequency ◽  
Vibration Amplitude ◽  
Ball Bearing ◽  
High Frequency Vibration ◽  
Rotating Speed ◽  
Deep Groove ◽  
Deep Groove Ball Bearing ◽  
Bearing Load

The paper investigates the role of radial load and rotating speed on the high frequency vibration of a deep groove ball bearing. Firstly, a bearing dynamic model with 6-DOF balls was established, considering the interactions between balls, races and the cage. The dynamic model was solved by fourth order varying steps Runge-Kutta integration. The frequency spectrums of dynamic response of races were analyzed with yule-walker and FFT. Secondly, a verification experiment was done with different radial loads and speeds. Finally, compared with the numerical and experimental results, the similar trend of the high frequency vibration was emerged. Higher vibration frequencies result with increasing bearing load; higher vibration amplitude cause by more quickly rotating speed. That is because the nature frequencies of the races are excited by the contact and shock between balls and races when balls leave from the non-load to the load zone. The frequency spectrums were also affected by the interaction between the balls and cage.

Predictive Dynamic Model of a Deep Groove Ball Bearing With a Flexible Outer Ring

2008 ◽  
Author(s):  
Alexandre Laurent ◽  
David Lenoir ◽  
Louis Jezequel ◽  
Bruno Mevel
Keyword(s):  
Dynamic Model ◽  
Ball Bearing ◽  
Dynamic Equilibrium ◽  
Rigid Bodies ◽  
Contact Forces ◽  
Hertzian Contact ◽  
Outer Ring ◽  
Integration Scheme ◽  
Deep Groove ◽  
Deep Groove Ball Bearing

An explicit dynamic model of a deep groove ball bearing under a radial load is proposed. All components are treated as rigid bodies whereas the bearing outer ring flexibility is taken into account using fixed interface component mode synthesis (CMS). The classical lubricated Hertzian contact theory is used to calculate elastic deflections and non-linear contact forces. The dynamic loading of the outer ring interface nodes is ensured using C2-continuous rational cubic splines. A Runge-Kutta-Felhberg 4th/5th order integration scheme is used to solve the dynamic equilibrium of all components. Time and frequency domain analyses are then carried out to investigate the dynamic behaviour of the ball bearing. The accuracy of these works is validated by comparison with the results of an analytical model and a model based on finite elements proposed in prior researchs.

Analysis of Tourism Ecology Capacity Based on the Nonlinear Dynamic Model

2009 ◽  
Vol 11 (2) ◽  
pp. 163-168
Author(s):  
Long LV ◽  
Zhenfang HUANG ◽  
Jiang WU
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Model
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