MINIMUM VOLUME MAGNETIC THRUST BEARING DESIGN FOR CENTRIFUGAL ARTIFICIAL HEART PUMPS

ASAIO Journal ◽  
1996 ◽  
Vol 42 (2) ◽  
pp. 51
Author(s):  
P E Allaire ◽  
R D Rockwell ◽  
G B Bearnson
Keyword(s):  
Artificial Heart ◽  
Thrust Bearing ◽  
Minimum Volume ◽  
Bearing Design

MINIMUM VOLUME MAGNETIC THRUST BEARING DESIGN FOR CENTRIFUGAL ARTIFICIAL HEART PUMPS

ASAIO Journal ◽  
1996 ◽  
Vol 42 (2) ◽  
pp. 51
Author(s):  
P E Allaire ◽  
R D Rockwell ◽  
G B Beamson
Keyword(s):  
Artificial Heart ◽  
Thrust Bearing ◽  
Minimum Volume ◽  
Bearing Design

Design for Latitude Using TOPT

1988 ◽  
Author(s):  
K. L. d’Entremont ◽  
K. M. Ragsdell
Keyword(s):  
Nonlinear Programming ◽  
Design Problem ◽  
Thrust Bearing ◽  
Taguchi Methods ◽  
Quality Loss ◽  
Variance Minimization ◽  
Minimization Problems ◽  
Bearing Design

Abstract An enhanced nonlinear programming code has been developed and applied to a turbogenerator hydrostatic thrust bearing design problem. The original code was OPT. It is augmented by a pre- and post-processor which addresses the performance variance minimization problems posed by Japan’s Genichi Taguchi. The new code TOPT is formed by adapting Taguchi’s external design influence and quality loss concepts to OPT. TOPT’s results are compared to an optimization using traditional Taguchi methods which are introduced to the reader. These two approaches yield comparable results.

Static and Dynamic Characteristics of Aerostatic Circular Porous Thrust Bearings (Effect of the Shape of the Air Supply Area)

2000 ◽  
Vol 123 (3) ◽  
pp. 501-508 ◽  
Author(s):  
S. Yoshimoto ◽  
K. Kohno
Keyword(s):  
Porous Material ◽  
Dynamic Characteristics ◽  
Thrust Bearing ◽  
Aerostatic Bearing ◽  
Bearing Surface ◽  
Static And Dynamic Characteristics ◽  
Thrust Bearings ◽  
Porous Bearing ◽  
Air Supply ◽  
Bearing Design

Recently, graphite porous material has been used successfully in an aerostatic bearing. In actual bearing design, it is often necessary to reduce the thickness of porous material to make the bearing smaller. However, a reduction in thickness results in a reduction in the strength of the porous material. In particular, when the diameter of porous material is large, it is difficult to supply the air through the full pad area of porous material because it deforms. Therefore, in this paper, two types of air supply method (the annular groove supply and the hole supply) in a circular aerostatic porous thrust bearing are proposed to avoid the deflection of the bearing surface. The static and dynamic characteristics of aerostatic porous bearing with these air supply methods are investigated theoretically and experimentally. In addition, the effects of a surface restricted layer on the characteristics are clarified.

Contact Characteristics Analysis of Water-Lubricated Thrust Bearing under Low-Speed and Heavy-Load Situation

2012 ◽  
Vol 532-533 ◽  
pp. 385-389
Author(s):  
Xiao Yang Zhang ◽  
Wei Wu ◽  
Jian Hui Zhou ◽  
Qi Jun Wu
Keyword(s):  
Contact Pressure ◽  
Thrust Bearing ◽  
Vertical Displacement ◽  
Heavy Load ◽  
Contact State ◽  
Low Speed ◽  
State Of Water ◽  
Characteristics Analysis ◽  
Bearing Design ◽  
Thrust Pad

The contact state of water-lubricated thrust bearing has been researched using FEM (Finite Element Method), the changes of contact pressure, deformation, temperature and etc have been analyzed and the bearing’s tribological properties under low-speed and heavy-load situation has been revealed, which are benefit in improving the bearing design, increasing the bearing’s durability and safety reliability. The results show that the max comprehensive stress, the max contact pressure and the max vertical displacement appear on the platform of the thrust pad; the temperature of one increases along with the speed and axial load increasing, and the highest temperature appears on the platform of the thrust pad.

Paper 6: Turbulent Lubrication Theory Applied to Fluid Film Bearing Design

1969 ◽  
Vol 184 (12) ◽  
pp. 40-47 ◽  
Author(s):  
C. M. Taylor
Keyword(s):  
Turbulent Flow ◽  
Incompressible Fluid ◽  
Thrust Bearing ◽  
Lubrication Theory ◽  
Fluid Film ◽  
Finite Width ◽  
Flow Conditions ◽  
Bearing Design ◽  
Turbulent Flow Conditions

The fluid film bearing designer is encountering situations of turbulent lubrication with ever-increasing regularity. This paper is not concerned with the fundamentals of turbulent lubrication but more with an assessment of the methods available to the bearing designer for the examination of turbulent flow conditions and with the effect of turbulence. The two main ‘engineering’ approaches to turbulence are delineated and their quantitative predictions compared for the case of a finite width plane inclined slider thrust bearing hydrodynamically lubricated with an isoviscous incompressible fluid.

scholarly journals Itaipu Binacional Hydro Power Plant Thrust Bearing Design Optimization for Higher Efficiency

2015 ◽  
Vol 5 (2) ◽  
Author(s):  
Piotr Pajaczkowski ◽  
Michel Spiridon ◽  
Andreas Schubert ◽  
Geraldo Carvalho Brito Junior ◽  
João Maria Marra
Keyword(s):  
Power Plant ◽  
Design Optimization ◽  
Thrust Bearing ◽  
Hydro Power ◽  
Bearing Design

The Leading-Edge-Groove Tilting-Pad Thrust Bearing: Recent Developments

1985 ◽  
Vol 107 (3) ◽  
pp. 423-428 ◽  
Author(s):  
A. M. Mikula
Keyword(s):  
Experimental Data ◽  
Power Loss ◽  
Thrust Bearing ◽  
Leading Edge ◽  
Thrust Bearings ◽  
Temperature Performance ◽  
Tilting Pad ◽  
Recent Developments ◽  
Bearing Design

This paper compares the leading edge groove and pressurized supply (flooded) lubricant supply methods, and analyzes their influence on the performance of equalizing tilting pad thrust bearings. This paper presents new experimental data on 6-shoe, 267 mm (10 1/2 in.) O.D. bearings, operating at shaft speeds up to 14000 rpm, with loads ranging up to 3.45 MPa (500 psi) for two different lubricants. The data presented details the power loss and babbitt temperature performance of two versions of the leading-edge-groove bearing design and contrasts the results with a pressurized supply bearing design.

scholarly journals BINACIONAL HYDRO POWER PLANT THRUST BEARING DESIGN OPTIMIZATION FOR HIGHER EFFICIENCY

2014 ◽  
Author(s):  
Piotr Pajaczkowski ◽  
Michel Spiridon ◽  
Andreas Schubert ◽  
Geraldo Carvalho Brito Júnior ◽  
João Maria Marra
Keyword(s):  
Power Plant ◽  
Design Optimization ◽  
Thrust Bearing ◽  
Hydro Power ◽  
Bearing Design

Passive Magnetic Bearing Design for a Small Wind Generator System

2011 ◽  
Vol 145 ◽  
pp. 174-178
Author(s):  
Yi Hua Fan ◽  
Ying Tsun Lee ◽  
Chung Chun Wang ◽  
Yi Lin Liao
Keyword(s):  
Wind Speed ◽  
Thrust Bearing ◽  
Load Capacity ◽  
Magnetic Bearing ◽  
Element Analysis ◽  
Generator System ◽  
Traditional System ◽  
Wind Generator ◽  
Bearing Design ◽  
Hybrid Bearing

A passive magnetic thrust bearing for a small vertical wind generator system is considered in this paper. The passive magnetic bearing is designed to reduce the axial load of the rotor system. The load capacity of the passive magnetic bearing is analyzed by finite element analysis software. From the simulation results, a suitable solution for the passive magnets of the test wind generator system is verified to be 225.6N with about a 2mm air gap. The experiment results show that a wind generator system with the additional passive magnetic bearing can start at a lower wind speed and transfers more power to the generator. The proposed hybrid bearing system can increase efficiency by 20%~50%, as compared with a traditional system supported by roller bearings at the same wind speed.

Sign in / Sign up

Export Citation Format

Share Document