Rotor-bearing Dynamics Design Technology. Part Iv. Ball Bearing Design Data

Rotor-bearing Dynamics Design Technology. Part Iv. Ball Bearing Design Data
Author: P. Lewis
Publisher:
Total Pages: 87
Release: 1965
Genre:
ISBN:

This Part IV of the Final Report presents design data for the stiffness characteristics of ball bearings for use in analyzing the dynamical performance of a rotor. The dynamic characteristics of fluid film bearings are given in Part III which also gives the methods for performing the analysis of the rotor-bearing system. Design data are presented for the extra-light and light group of deep-grooved and angular contact bearings undergoing either a pure radial load, pure axial load, or combined radial load with axial preload. The data are given in graphical form and cover both radial stiffness and load- carrying capacity. A nominal damping value for ball bearings, obtained from experimentation, is suggested. Some of the general guide rules for the selection of ball bearings are given. These are concerned with fatigue life, limiting speeds, design, and lubrication. Safe load levels are indicated.

Rotor-bearing Dynamics Technology Design Guide

Rotor-bearing Dynamics Technology Design Guide
Author: A. B. Jones
Publisher:
Total Pages: 116
Release: 1978
Genre: Ball-bearings
ISBN:

This report is an update of the original Part IV of the Rotor-bearing Dynamics Design Technology Series, AFAPL-TR-65-45 (Parts I through X). A Computer program is given for preparation of ball bearing stiffness data input for rotordynamic response programs. The complete stiffness matrix is calculated including centrifugal effects. Considerations such as elastohydrodynamic and cage effects are not included since they have little influence on the calculation of ball bearing stiffness. The resulting program is reasonably small and easy to use. Lastly, the stiffness data included in the original Part IV have been updated and are included in appendices.

Rotor-bearing Dynamics Technology Design Guide

Rotor-bearing Dynamics Technology Design Guide
Author: A. B. Jones
Publisher:
Total Pages: 102
Release: 1978
Genre: Ball-bearings
ISBN:

This report is an update of the original Part IV of the Rotor-bearing Dynamics Design Technology Series, AFAPL-TR-65-45 (Parts I through X). A Computer program is given for preparation of ball bearing stiffness data input for rotordynamic response programs. The complete stiffness matrix is calculated including centrifugal effects. Considerations such as elastohydrodynamic and cage effects are not included since they have little influence on the calculation of ball bearing stiffness. The resulting program is reasonably small and easy to use. Lastly, the stiffness data included in the original Part IV have been updated and are included in appendices.

Rotor-bearing Dynamics Technology Design Guide

Rotor-bearing Dynamics Technology Design Guide
Author: A. B. Jones
Publisher:
Total Pages: 73
Release: 1979
Genre: Bearings (Machinery)
ISBN:

This report is an update of the original Part IV of the Rotor-Bearing Dynamics Design Technology Series, AFAPL-TR-65-45 (Parts I through X). A computer program is given for preparation of cylindrical roller bearing stiffness data input for rotordynamic response programs. The complete stiffness matrix is calculated including centrifugal effects. Considerations such as elastohydrodynamic and cage effects are not included since they have little influence on the calculation of cylindrical roller bearing stiffness. The resulting the program is reasonably small and easy to use.

Rotor-Bearing Dyanmics Technology Design Guide

Rotor-Bearing Dyanmics Technology Design Guide
Author: A. B. Jones
Publisher:
Total Pages: 93
Release: 1979
Genre:
ISBN:

This report is an update of the original Part IV of the Rotor-Bearing Dynamics Design Technology Series, AFAPL-TR-65-45 (Parts I through X). A computer program is given for preparation of tapered roller bearing stiffness data input for rotordynamic response programs. The complete stiffness matrix is calculated including centrifugal effects. Considerations such as elastohydrodynamic and cage effects are not included since they have little influence on the calculation of tapered roller bearing stiffness. The resulting program is reasonably small and easy to use.

Rotor-bearing Dynamics Design Technology

Rotor-bearing Dynamics Design Technology
Author: J. Lund
Publisher:
Total Pages: 267
Release: 1968
Genre: Bearings (Machinery)
ISBN:

The volume treats three special bearing types selected for study because of their favorable stability characteristics and, hence, their potential for use in high speed rotating machinery applications. The three bearing types are: (a) The Three Lobe Journal Bearing; (b) The Floating Sleeve Bearing with an Incompressible Lubricant; (c) The Floating Sleeve Bearing with a Compressible Lubricant. In the floating sleeve bearings, the ring is prevented from rotating but is otherwise free to move. The ring is floated by pressurizing the outer film of the bearing. In the case of a compressible lubricant, the inner film is pressurized as well. The volume gives extensive design data in form of charts and tables from which the bearing dimensions can be obtained for a given application. Data are given for bearing flow, friction power loss and the speed at which hydrodynamic instability sets in. In addition, two computer programs accompany the volume, and instructions and listings of the programs are included. The programs may be used to obtain data for cases not covered by the presented design data.

Rotor-Bearing Dynamics Technology Design Guide. Part 8. A Computerized Data Retrieval System for Fluid Film Bearings

Rotor-Bearing Dynamics Technology Design Guide. Part 8. A Computerized Data Retrieval System for Fluid Film Bearings
Author:
Publisher:
Total Pages: 250
Release: 1980
Genre:
ISBN:

This report describes a computerized data storage retrieval system for the static and dynamic characteristics of fluid film bearings. The procedure combines asymptotic power law extrapolation outside the stored data range with smooth interpolation within the data table. Thirty-one data tables have been prepared and installed in the system. The procedure allows addition of new data tables in the future. The retrieval software allows the user to list the data content in either the dimensional or the dimensionless form or to generate data lines in the sequence and format directly usable as input to the rotordynamics software described. Inertia, compliance and damping effects of the pedestal can be included in the retrieval dynamic characteristics of each bearing.