Nonlinear dynamic responses of a rigid rotor supported by active bump-type foil bearings

Guan, Hanqing; Feng, Kai; Yu, Ke; Cao, Yuanlong; Wu, Yihua

doi:10.1007/s11071-020-05608-4

Cited by 21 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The work [28] is a continuation of the above referenced numerical study. The authors investigate the properties of a nonlinear model of an actively controlled GFB.…”

Section: Applications Of Piezoelectric Transducers To Gas Foil Bearingsmentioning

confidence: 93%

“…Concept of application of radially oriented PZT stacks to control the GFBs' clearance/preload [32] Active method; capability of precise adjustment of the GFBs' foils; fast operation; very high precision of positioning the GFBs' structural parts High voltage may be required to supply PZTs; requires experimental validation; high system complexity and costly solution 6. Application of circumferentially oriented PZT and flexure-based mechanical amplifiers to control the GFBs' clearance/preload [26,28,29] Active method; capability of activation of large and fast deformations of the foils to adjust the clearance; experimentally tested; multiple-lobe clearance; controllable GFBs' stiffness and the shaft's journal eccentricity High voltage may be required to supply PZTs; high system complexity and costly solution 7. Hybrid bearing (ball bearing and GFB) equipped with PZTs and electromagnetic coils [33] Unique features not met in other applications-advantageously combines functionalities of both types of bearings; capability of effective change of elasto-damping properties of the bearing; interesting perspective of further research Complex design and structure; complex and costly control system required for coils and PZTs; large space required for entire installation; complex power system used to supply two types of electromechanical actuators 8.…”

Section: Methods Used To Enhancementioning

confidence: 99%

“…The studies [26,28,29] report the application of circumferentially oriented PZTs built-in into the body of the GFBs' bushing. As presented in the cited works, it is feasible to adjust mechanical preloads in the bearing making use of PZTs and mechanical amplifiers (lever amplifiers) constructed with flexures.…”

Section: Applications Of Piezoelectric Transducers To Gas Foil Bearingsmentioning

confidence: 99%

“…Improvement of elasto-damping properties (referenced in Figure 2) via passive [16][17][18][19][20][21][22][23][24] and active methods [25][26][27][28][29][30][31][32][33][34][35].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Gas Foil Bearing Technology Enhanced with Smart Materials

et al. 2021

View full text Add to dashboard Cite

The paper discusses a perspective of the usage of various types of smart materials to enhance the operational properties of Gas Foil Bearings. The authors, referring to the current investigation on thermomechanical characteristics of the above-mentioned bearing type, have focused on the concept of using Shape Memory Alloys, Piezoelectric Transducers, Thermoelectric Modules and Thermocouples to improve both mechanical and thermal behavior of the bearings. Based on the available literature and the authors’ experience, the present work provides an overview of the known and perspective applications of smart materials to Gas Foil Bearings. In particular, a discussion on their capabilities, limitations and effectiveness is conducted, taking into account the unique characteristics and requirements of the studied type of bearings.

show abstract

“…The work [28] is a continuation of the above referenced numerical study. The authors investigate the properties of a nonlinear model of an actively controlled GFB.…”

Section: Applications Of Piezoelectric Transducers To Gas Foil Bearingsmentioning

confidence: 93%

Section: Methods Used To Enhancementioning

confidence: 99%

Section: Applications Of Piezoelectric Transducers To Gas Foil Bearingsmentioning

confidence: 99%

“…Improvement of elasto-damping properties (referenced in Figure 2) via passive [16][17][18][19][20][21][22][23][24] and active methods [25][26][27][28][29][30][31][32][33][34][35].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Gas Foil Bearing Technology Enhanced with Smart Materials

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Finally, various types of smart materials have been proposed to advantageously modify the thermomechanical properties of the bearings, including shape memory alloys, piezoelectric and thermoelectric materials [ 19 , 20 , 21 ]. Other structural modifications introduced to GFBs are presented in [ 2 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Thermal Characterization of a Gas Foil Bearing—A Novel Method of Experimental Identification of the Temperature Field Based on Integrated Thermocouples Measurements

Martowicz

Zdziebko

Roemer

et al. 2022

Sensors

View full text Add to dashboard Cite

Maintenance of adequate thermal properties is critical for correct operation of a gas foil bearing. In this work, the authors present the results of the experimentally conducted thermal characterization of a prototype installation of the bearing. A novel method of temperature identification, based on integrated thermocouples readings, has been employed to determine the thermal properties of the specialized sensing top foil mounted in the tested bearing. Two measurement campaigns have been subsequently completed, applying freely-suspended and two-node support configurations, to gather complementary knowledge regarding the bearing’s operation. Apart from the rotational speed and temperature field measurements, the authors have also studied the friction torque and the shaft’s journal trajectories based on its radial displacements. The temporal courses for the above-mentioned quantities have enabled inference on the effects present during run-up, run-out and stable state operation at a constant speed. As confirmed, the applied distribution of the integrated sensors allows for temperature readings on the entire outer surface of the foil, and therefore, provides useful data for the bearing characterization. The work is concluded with presentation of the recommended directions regarding future improvements of the proposed measurement technique and more comprehensive study of the bearing’s characteristics.

show abstract

On the Nonlinear Dynamics of a Rigid Rotor Supported by Shimmed Conical Gas Foil Bearings

Sarrazin,

Liebich

2023

Mechanisms and Machine Science

View full text Add to dashboard Cite

Nonlinear dynamic responses of a rigid rotor supported by active bump-type foil bearings

Cited by 21 publications

References 30 publications

Gas Foil Bearing Technology Enhanced with Smart Materials

Gas Foil Bearing Technology Enhanced with Smart Materials

Thermal Characterization of a Gas Foil Bearing—A Novel Method of Experimental Identification of the Temperature Field Based on Integrated Thermocouples Measurements

On the Nonlinear Dynamics of a Rigid Rotor Supported by Shimmed Conical Gas Foil Bearings

Contact Info

Product

Resources

About