Characteristic Analysis and Simulated Test of Hybrid Bearing with the Introduction of Piezoelectric Controller

Chen, Runlin; Ouyang, Wu; Shi, Zhibin; Wei, Yangyang; Yuan, Xiao

doi:10.1155/2016/6874741

Cited by 3 publications

(2 citation statements)

References 26 publications

(28 reference statements)

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“…According to the structure of the distributed hybrid thrust bearing with tilting pad, the preload coefficient of the tilting pad is adjusted to change the bearing unilateral gap between the tilting pad and the thrust plate. With reference to the concept of the preload coefficient of the radial tilting pad bearing [29,30], the equation of the tilting pad preload coefficient of the thrust bearing is given.…”

Section: Performance Control Of Thrust Bearingmentioning

confidence: 99%

Study on the influence of thrust plate tilt on performance of distributed hybrid thrust bearing with tilting pad

Chen

Wang

et al. 2021

J Braz. Soc. Mech. Sci. Eng.

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A kind of distributed hybrid thrust bearing with tilting pad is proposed in this paper, and the influence of thrust plate tilt on bearing performance is analyzed. The film thickness equation is constructed, considering the machining error and installation error synthetically which are the main causes of thrust plate tilt. Substituting the film thickness equation to the classical calculation equation of thrust bearing, the time-varying stiffness of the bearing is obtained. The influence of tilt angle of thrust plate on time-varying stiffness of the bearing is analyzed through the case bearing, and the bearing performance is controlled by change pivot position of tilting pad which is represented by preload coefficient. The results show that the thrust plate tilt causes the fluctuation of the bearing stiffness during the rotation period, and this fluctuation is exacerbated as the increasing of the tilt angle. The bearing stiffness increases and the tilt angle range of the thrust plate decreases accordingly, because that the increasing of the preload coefficient of tilting pad makes the bearing unilateral gap decrease. However, the large preload coefficient exacerbates the adverse effect of thrust plate tilt on the bearing, so the preload coefficient of the tilting pad needs to be adjusted reasonably. The research in this paper can provide a theoretical reference for the optimization of the tilt angle of the thrust plate and provide data support for the engineering application of distributed hybrid thrust bearing with tilting pad. KeywordsHybrid thrust bearing • Thrust plate tilt • Tilting pad • Time-varying stiffness * Runlin Chen

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Section: Performance Control Of Thrust Bearingmentioning

confidence: 99%

Study on the influence of thrust plate tilt on performance of distributed hybrid thrust bearing with tilting pad

Chen

Wang

et al. 2021

J Braz. Soc. Mech. Sci. Eng.

Self Cite

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show abstract

“…The numerical calculation results show that both control methods can achieve the goal of reducing the axial vibration. Chen et al [31] employed a technique where piezoelectric ceramic actuators were positioned within grooves on the surface of the oil seal of a tilting pad bearing to adjust the clearance or preload coefficient of the bearing pads. The experimental outcomes from this study indicated that utilizing piezoelectric transducers (PZT) as actuators can effectively enable the active control of the bearing vibration.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Piezoelectric Control for Changing Tilting Pad Journal Bearing Circumferential Angle and Radial Displacement

Peng,

Qin,

Wang

et al. 2023

Lubricants

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In order to improve the vibration performance of the oil-lubricated tilting pad bearing system, an experimental approach using a piezoelectric actuator to control two new flexible tilting pads is proposed. The performance test bench of the bearing–rotor system based on a tilting pad bearing with a flexible support is established. The different circumferential angles of the angle bearing tilting pad and the radial displacement of the displacement bearing are tested by a piezoelectric actuator. At the same time, the trajectory of the rotor center under actual operating conditions is analyzed. The experimental results show that the amplitude of the rotor journal can be significantly reduced by controlling the control variables related to the circumferential angle and radial displacement of the bearing bush. Therefore, this control improvement can improve the vibration performance of two new flexible tilting pad bearing–rotor systems. The technical means are provided for the active control of an oil-lubricated tilting pad bearing.

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Performance Research on Bi-directional Tilting Pad Thrust Bearing Considering the Verticality Error of Thrust Plate

Chen

Han

Wang

et al. 2020

J. Phys.: Conf. Ser.

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In order to improve the axial stiffness and its controllability of the CNC machine tool spindle system, a bi-directional tilting pad thrust bearing is used instead of the hydrostatic thrust bearing to bear the axial load. Due to the processing and installing, there must be a certain verticality error between the thrust plate and rotor axis. The lubrication model of the thrust bearing considering the verticality error is established in this paper. The Reynolds equation is solved by FDM (finite difference method), and the key performance data of the bidirectional tilting pad thrust bearing under rated conditions are obtained, including eccentricity, minimum film thickness, maximum temperature rise and axial stiffness, etc. The variation of performance parameters such as film thickness, temperature rise and stiffness of thrust bearing with different working conditions are mainly studied. The maximum allowable verticality errors in the whole working condition range of load and speed are given. According to the requirements of film thickness and temperature rise, the thrust bearing clearance is optimized based on the comprehensive consideration of lubrication performance and dynamic performance, and the allowable ranges of clearance under different verticality errors is analyzed. This research provides theoretical guidance for the design and manufacture of tilting pad thrust bearings used for the CNC machine tool spindle system.

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Characteristic Analysis and Simulated Test of Hybrid Bearing with the Introduction of Piezoelectric Controller

Cited by 3 publications

References 26 publications

Study on the influence of thrust plate tilt on performance of distributed hybrid thrust bearing with tilting pad

Study on the influence of thrust plate tilt on performance of distributed hybrid thrust bearing with tilting pad

Experimental Study of Piezoelectric Control for Changing Tilting Pad Journal Bearing Circumferential Angle and Radial Displacement

Performance Research on Bi-directional Tilting Pad Thrust Bearing Considering the Verticality Error of Thrust Plate

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