An Experimental Investigation into Bearing-Induced Spindle Vibration

Aini, R.; Rahnejat, Homer; Gohar, R.

doi:10.1243/pime_proc_1995_209_130_02

Cited by 50 publications

(51 citation statements)

References 6 publications

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“…Akturk et al [22] showed that, when the ball passage frequency coincides with the natural frequency, the system undergoes violent vibrations for even defect-free systems. Similar results were also obtained by Rahnejat and Gohar [6], Aini et al [23] and Deeyiengyang and Ono [24]. Akturk et al [22] have also investigated the effects of the preload and the number of balls on the vibrations of shaft-bearing systems.…”

Section: Introductionsupporting

confidence: 76%

Some characteristic parameters affecting the natural frequency of a rotating shaft supported by defect-free ball bearings

Aktürk¹

2003

Proceedings of the Institution of Mechanical Engineers, Part K:

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It is now well known that the preload and number of rolling elements of an angular contact ball bearing are two important parameters that affect the bearing-induced vibration of a shaft-bearing assembly. Increasing the preload changes the steady state position of the vibration on the non-linear contact-force relation of the bearing, resulting in the shaft mass being supported on stiffer springs. A larger number of rolling elements causes a similar stiffer equivalent spring. The ball set position is another parameter that affects the vibration of the system. These effects have been investigated by different researchers with simulation programs, and their ndings are also supported by the experimental evidence of other researchers. In this paper, therefore, a new analytical investigation into the effects of preload, the number of rolling elements and ball set position is made. Analytical results are found to be in good agreement with simulation results.

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Section: Introductionsupporting

confidence: 76%

Some characteristic parameters affecting the natural frequency of a rotating shaft supported by defect-free ball bearings

Aktürk¹

2003

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…6,35 Moreover, there are other two sources of compliances. According to the experimental results presented by Aini et al, 36 it is shown that other spectral contributions (besides the bearing element contributions) appear to be the natural frequencies of the shaft-bearing system, and in their case, due to a combination of the housing compliance and shaft flexibility. For the above analysis, the bearing support compliances include the bearing-housing and its interface stiffness with the outer bearing ring, and the flexibility of the shaft-bearing assembly.…”

Section: Introductionmentioning

confidence: 95%

Impulse vibration transmissibility characteristics in the presence of localized surface defects in deep groove ball bearing systems

Liu

Shao

Lim

2013

Proceedings of the Institution of Mechanical Engineers, Part K:

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The present study analyzes the impulse vibration transmission through the deep groove ball bearing systems caused by a localized surface defect on the bearing raceways. The analysis is performed to understand the use of vibration signal in rotating machines for condition monitoring and diagnostics. A new dynamic model of a deep groove ball bearing system that accounts for the contact stiffness between the outer race and housing, and includes the effect of a localized defect on raceways is formulated in this study. This model is applied to examine the effect of housing materials on the contact stiffness between the outer race and housing, and the vibration transmission characteristics through the ball bearing systems. A series of parametric studies is also performed to understand the relationships between the material properties, the outer race-housing contact stiffness, and ball bearing vibration response, and as well as the vibration transmission characteristics of the impulse caused by the defects with different sizes. The numerical results demonstrate that the proposed model provides a way for simulating vibration transmissibility characteristics through the ball bearing systems, which was previously not possible. An experimental investigation is also presented to validate the proposed model.

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“…Wardle 3 used an experiment to show the effect of loading on the bearing vibration. Aini et al 4 demonstrated the dominant measurable vibration from a loaded rotor-bearing system are frequency contributions due to system natural frequencies in various degrees of freedom, such as in the vertical lateral vibration (bounce mode) and tilting/pitching motions due to eccentric loading as well as in axial motion due to any thrust load. To clearly observe the bearing induced frequencies, it is necessary to run spindles and rotors without application of significant external forces.…”

Section: Introductionmentioning

confidence: 99%

Dynamic modelling for vibration analysis of a cylindrical roller bearing due to localized defects on raceways

Martínek

Jing

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part K:

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The current study presents a multi-body dynamic model for investigating the vibration responses of a cylindrical roller bearing with localized surface defects such as dents on raceways. This model is developed with the assumptions that outer raceway is fixed in space and other elements have three degrees of freedom (DOF): two translations and one rotation. Centrifugal forces, gravity forces and slipping of the rollers are taken into account. The couplings of the Hertzian line contact deformation theory and the slice method are used to calculate all the contact forces. Local deflections due to defects are introduced into the constructed model by the time-varying deflection excitation. The equations of motion are established by the Newton-Euler method and solved by the fourth-order Runge-Kutta integration method with variable steps. Both time and frequency domains are used to analyse dynamic responses of the defective bearing. Some new components of the characteristic defect frequency can be seen from the results. The effects of time-varying surface models, different defect types and defect sizes on dynamic responses of the defective bearing are studied. An experiment is carried out to validate the proposed model. Comparison of the frequency spectrum in simulation results with that in the experiment shows reasonable qualitative agreement.

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An Experimental Investigation into Bearing-Induced Spindle Vibration

Cited by 50 publications

References 6 publications

Some characteristic parameters affecting the natural frequency of a rotating shaft supported by defect-free ball bearings

Some characteristic parameters affecting the natural frequency of a rotating shaft supported by defect-free ball bearings

Impulse vibration transmissibility characteristics in the presence of localized surface defects in deep groove ball bearing systems

Dynamic modelling for vibration analysis of a cylindrical roller bearing due to localized defects on raceways

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