NDLI: Static and Dynamic Characteristics of Air Foil Thrust Bearing Considering Tilting Pad Condition

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Park, Dong-Jin Lee, Yong-Bok Kim, Chang-Ho Jang, Gun-Hee
Copyright Year	2007
Abstract	The thrust pad of the rotor is used to sustain the axial force generated due to the pressure difference between the compressor and turbine sides of turbomachinery such as the gas turbines and turbochargers. Furthermore, this thrust pad has a role to maintain and determines the attitude of the rotor. In a real system, it also helps reinforce the stiffness and damping of the journal bearing. This study was performed for the purpose of analyzing the characteristics of the air foil thrust bearing. The model for the air foil thrust bearing used in this study is composed of two parts: one is an inclined plane, which plays a role to increase the load carrying capacity using the physical wedge effect, and the other is a flat plane. This study mainly consists of three parts. First, the static characteristics were obtained over the region of the thin air film using the finite difference method (FDM) and the bump foil characteristics using the finite element method (FEM). Second, the analysis of the dynamic characteristics was conducted by perturbation method. For more exact calculation, the rarefaction gas coefficients perturbed about the pressure and film thickness were taken into consideration. At last, the static and dynamic characteristics of the tilting condition of the thrust pad were obtained. Furthermore, the load carrying capacity and torque were calculated for both tilting and not-tilting conditions. From this study, several results were presented: 1) the stiffness and damping of the bump foil under the condition of the various bump parameters, 2) the load carrying capacity and bearing torque at the tilting state, 3) the bearing performance under various bearing parameters, 4) the effects considering the rarefaction gas coefficients.
Sponsorship	International Gas Turbine Institute
Starting Page	931
Ending Page	942
Page Count	12
File Format	PDF
ISBN	0791847942
DOI	10.1115/GT2007-27814
e-ISBN	0791837963
Volume Number	Volume 5: Turbo Expo 2007
Conference Proceedings	ASME Turbo Expo 2007: Power for Land, Sea, and Air
Language	English
Publisher Date	2007-05-14
Publisher Place	Montreal, Canada
Access Restriction	Subscribed
Subject Keyword	Perturbation method Thrust pad Air foil bearings Tilting condition Damping Torque Bearings Rotors Turbomachinery Compressors Finite element methods Film thickness Wedges Pressure Foil bearings Load bearing capacity Gas turbines Thrust bearings Stiffness Turbochargers Thrust Journal bearings Turbines Finite difference methods
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The Static Characteristics of Bump Foil Thrust Bearing Considering Tilting Condition

Effect of Foil Geometry on the Static Performance of Thrust Foil Bearings

Identification of Rotordynamic Force Coefficients of a Metal Mesh Foil Bearing Using Impact Load Excitations

Oil Film Angular Stiffness Determination in a Hydroelectric Tilting Pad Thrust Bearing

Bump-Type Foil Bearings and Flexure Pivot Tilting Pad Bearings for Oil-Free Automotive Turbochargers: Highlights in Rotordynamic Performance

Theoretical Study of Top Foil Sagging Effect on the Performance of Air Thrust Foil Bearing

Static Characteristics of Gas Foil Thrust Bearing Based on Gas Rarefaction Model

Design Approach for Large Foil Bearings Considering Rotordynamics

Hybrid Flexure Pivot-Tilting Pad Gas Bearings: Analysis and Experimental Validation

Static and Dynamic Characteristics of Air Foil Thrust Bearing Considering Tilting Pad Condition

Similar Documents

The Static Characteristics of Bump Foil Thrust Bearing Considering Tilting Condition

Effect of Foil Geometry on the Static Performance of Thrust Foil Bearings

Identification of Rotordynamic Force Coefficients of a Metal Mesh Foil Bearing Using Impact Load Excitations

Oil Film Angular Stiffness Determination in a Hydroelectric Tilting Pad Thrust Bearing

Bump-Type Foil Bearings and Flexure Pivot Tilting Pad Bearings for Oil-Free Automotive Turbochargers: Highlights in Rotordynamic Performance

Theoretical Study of Top Foil Sagging Effect on the Performance of Air Thrust Foil Bearing

Static Characteristics of Gas Foil Thrust Bearing Based on Gas Rarefaction Model

Design Approach for Large Foil Bearings Considering Rotordynamics

Hybrid Flexure Pivot-Tilting Pad Gas Bearings: Analysis and Experimental Validation

Static and Dynamic Characteristics of Air Foil Thrust Bearing Considering Tilting Pad Condition