A real-time coupling model of bearing-rotor system based on semi-flexible body element

Ma, Shuaijun; Yin, Yanjing; Chao, B. F.; Yan, Kun; Fang, Bin; Hong, Jun

doi:10.1016/j.ijmecsci.2022.108098

Cited by 54 publications

(8 citation statements)

References 66 publications

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“…Multiphysics coupling problems can be solved by the unidirectional fluid-structure coupling method, which couples the pressure distribution in the fluid domain to that in the solid domain [268]. However, this method considers only the influence of the flow field pressure distribution on the structural components, ignoring the influences of structural component deformation on the flow field [269].…”

Section: Multiphysics Coupling Modelsmentioning

confidence: 99%

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Zhang,

Huang,

Chen

et al. 2024

Int. J. Extrem. Manuf.

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Fluid lubricated bearings have been widely adopted for supporting components of high-end equipments in the field of metrology, semi-conductor, aviation, strategic defense, ultra-precision manufacturing, medical treatment and power generations. These fields all involve extreme working conditions such as ultra-high moving precision, ultra-high rotation speed, ultra-heavy bearing load, ultra-high environmental temperature, high radiation and high vacuum, which present challenges for the design and optimization of reliable fluid lubricated bearings. Breakthrough of any related bottlenecks will promote the development course of high-end equipments. To further promote the advancement of high-end equipments, this paper reviews the design and optimization of fluid lubricated bearings operated with typical extreme working performances. Targeting on the realization of extreme working perfor mances, the current challenges, the current solutions, the underlying deficiencies and the promising developing directions regarding to the design and optimization of fluid lubricat ed bearings are systematically pointed out. This paper can provide guidance for choosing suitable fluid lubricated bearings and optimizing their structures based on required extremeworking performances.

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Section: Multiphysics Coupling Modelsmentioning

confidence: 99%

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Zhang,

Huang,

Chen

et al. 2024

Int. J. Extrem. Manuf.

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“…After noise elimination, we chose 70% for the training group and 30% for the test group. The normalization formula is givenby [30,31].…”

Section: The Realization Of the Lstm Modelmentioning

confidence: 99%

“…After noise elimination, we chose 70% for the training group and 30% for the test group. The normalization formula is givenby [30,31]. This paper builds an LSTM neural network based on the Python framework.…”

Section: The Realization Of the Lstm Modelmentioning

confidence: 99%

Digital Twin-Driven Thermal Error Prediction for CNC Machine Tool Spindle

Lu,

Zhu,

Wang

et al. 2023

Lubricants

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Traditional methods for predicting thermal error ignore the correlation between physical world data and virtual world data, leading to the low prediction accuracy of thermal errors and affecting the normal processing of the CNC machine tool (CNCMT) spindle. To solve the above problem, we propose a thermal error prediction approach based on digital twins and long short-term memory (DT-LSTM). DT-LSTM combines the high simulation capabilities of DT and the strong data processing capabilities of LSTM. Firstly, we develop a DT system for the thermal characteristics analysis of a spindle. When the DT system is implemented, we can obtain the theoretical value of thermal error. Then, the experimental data is used to train LSTM. The output of LSTM is the actual value of thermal error. Finally, the particle swarm optimization (PSO) algorithm fuses the theoretical values of DT with the actual values of LSTM. The case study demonstrates that DT-LSTM has a higher accuracy than the single method by nearly 11%, which improves the prediction performance and robustness of thermal error.

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“…For the vibration of roller bearings, Wang et al [11] considered the structure flexible deformations of dynamic model of ball bearings to investigate the effect of structure flexible deformations on bearing dynamic properties and the variation of the shaft-bearing-housing system. Ma et al [12] proposed a dynamic model of a bearing-rotor system by introducing a semi-flexible body element to study its vibration characteristics by changing eccentric excitation. Shah and Patel [13] adopted the method of stiffness and damping to develop the dynamic model of ball bearings to study the vibration mechanism of ball bearings generated by the dry and lubricated contact.…”

Section: Introductionmentioning

confidence: 99%

Correlation between vibration and power consumption of angular contact ball bearings under structural size combinations based on nonlinear dynamic model

Deng

Zhao

Yang

et al. 2023

Preprint

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To explore the correlation between vibration and power consumption of angular contact ball bearings, the evaluation of power consumption was merged into the original nonlinear dynamic model of ball bearings and this model was validated by the experimental method. On this basis, a comprehensive analysis of vibration and power consumption of ball bearings was conducted, then, the variations in the power consumption and vibration at different numbers of balls and groove curvature radii were studied, again, their optimal combinations were determined to attain the acceptable power consumption, dynamic stability and vibration in the bearing system. The corresponding results illustrate that reducing the maximum number of balls by one or two can obtain the good dynamic performance of friction consumption, dynamic stability and vibration of ball bearings, besides, the combination of inner and outer groove curvature radii should both strengthen contact loads and effectively guide the motion of the ball to get the favorable comprehensive performances.

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A real-time coupling model of bearing-rotor system based on semi-flexible body element

Cited by 54 publications

References 66 publications

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review

Digital Twin-Driven Thermal Error Prediction for CNC Machine Tool Spindle

Correlation between vibration and power consumption of angular contact ball bearings under structural size combinations based on nonlinear dynamic model

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