Extended Duration Running and Impulse Loading Characteristics of an Acoustic Bearing with Enhanced Geometry

Stolarski, T.A.; Gawarkiewicz, Rafał; Tesch, K.

doi:10.1007/s11249-017-0831-y

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…In [121], the authors presented a similar bearing with [77] (see figure 18(b)). The influence of the squeeze film effect on the running performance of the rotor to this bearing was studied by Stolarski et al [124]. Experimental results showed that the squeeze film effect had an obvious effect on reducing rotor vibration.…”

Section: Different Types Of Hybrid Sfabsmentioning

confidence: 99%

Near-field acoustic levitation and applications to bearings: a critical review

Shi

Feng

et al. 2019

Int. J. Extrem. Manuf.

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The importance to industry of non-contact bearings is growing rapidly as the demand for high-speed and high-precision manufacturing equipment increases. As a recently developed non-contact technology, near-field acoustic levitation (NFAL) has drawn much attention for the advantages it offers, including no requirement for an external pressurized air supply, its compact structure, and its ability to adapt to its environment. In this paper, the working mechanism of NFAL is introduced in detail and compared to all existing non-contact technologies to demonstrate its versatility and potential for practical applications in industry. The fundamental theory of NFAL, including gas film lubrication theory and acoustic radiation pressure theory is presented. Then, the current state-of-the-art of the design and development of squeeze film air bearings based on NFAL is reviewed. Finally, future trends and obstacles to more widespread use are discussed.

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Section: Different Types Of Hybrid Sfabsmentioning

confidence: 99%

Near-field acoustic levitation and applications to bearings: a critical review

Shi

Feng

et al. 2019

Int. J. Extrem. Manuf.

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“…no noise pollution and need low maintenance cost. Since the bearing's service life is determined by the longevity of the smart materials, the bearing's service life can be extended if the material property is improved [6], [7]. On account of that the ultrasonic bearing's operation is based on the nearfield acoustic effect and hydrodynamic lubrication effect, this type of bearings shows extremely low friction torque and high limit speed.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Load-Carrying Capacity in the Radial Direction for Piezoelectric-Driven Ultrasonic Bearings

Deng

2019

IEEE Access

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This paper presents a theoretical modeling method on radial levitation force for ultrasonic bearings actuated by piezoelectric transducers with the aim of predicting their load-carrying capacity. The finite difference method is adapted to calculate the model, which is represented by a high-order multidimensional partial differential equation. The static levitation force testing experiments validate that the established mechanical model can interpret the experimental data well. This model also reveals that the ultrasonic bearing's levitation mechanism under the comprehensive action of near-field acoustic levitation effect and hydrodynamic effect when the bearing operates at high speeds. Some key factors including bearing's dynamic parameters, working media, clearance sizes, and environmental conditions that influence the ultrasonic bearing's levitation effect are discussed. The analysis of these factors can guide the ultrasonic bearing's structural design and the selection of the ultrasonic bearing's working parameters.

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