ASME International
0022-2305
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
Isothermal Elastohydrodynamic Lubrication of Point Contacts: Part III—Fully Flooded Results
Tập 99 Số 2 - Trang 264-275 - 1977
Utilizing the theory developed by the authors in an earlier publication, the
influence of the ellipticity parameter, the dimensionless speed, load, and
material parameters on minimum film thickness was investigated. The ellipticity
parameter was varied from one (a ball on a plate configuration) to eight (a
configuration approaching a line contact). The dimensionless speed parameter was
varied over...
Analysis of Gas-Lubricated Foil Journal Bearings
Tập 105 Số 4 - Trang 647-655 - 1983
This work is concerned with an evaluation of the performance of a gas journal
bearing using a spring supported compliant foil as the bearing surface. The
analysis, conducted for both single and multipad configurations, is concerned
with the effects that the various structural, geometric, and operational
variables have on bearing behavior. Following the solution of the relevant
differential equatio...
A Bulk-Flow Theory for Turbulence in Lubricant Films
Tập 95 Số 2 - Trang 137-145 - 1973
The purpose of this study on the turbulent lubricant film is: 1 To give a brief
outline of a new theory called bulk-flow theory; 2 To investigate to what extent
results of theories based on law of wall and mixing length concept agree with
the newly developed theory; 3 To provide a theoretical basis for the design of
bearings lubricated by fluids of low kinematic viscosity.
Calculation of Stiffness and Damping Properties of Gas Bearings
Tập 90 Số 4 - Trang 793-803 - 1968
The dynamic characteristics of a gas bearing can be represented by a set of
spring and damping coefficients (impedances) which are functions of the static
load on the bearing, the rotating speed and the whirl frequency of the journal.
For a rotor supported in gas bearings, these coefficients can be used directly
in a critical speed calculation or an unbalance response calculation. In
addition, the...
The Role of Elastic Tangential Compliance in Oblique Impact
Tập 103 Số 1 - Trang 74-80 - 1981
An extension of the Hertz theory of impact to the oblique impact of elastic
bodies with circular contact is outlined. The tangential compliance of the
contact surface under the action of Coulomb friction is shown to have a
significant effect on the rebound angles, if the local angle of incidence does
not greatly exceed the angle of friction. Experiments are described in which the
trajectory of a m...
Dynamics of Rolling-Element Bearings—Part III: Ball Bearing Analysis
Tập 101 Số 3 - Trang 312-318 - 1979
An analytical formulation for the generalized ball, cage, and race motion in a
ball bearing is presented in terms of the classical differential equations of
motion. Ball-race interaction is analyzed in detail and the resulting force and
moment vectors are determined. The ball-cage and race-cage interactions are
considered to be either hydrodynamic or metallic and a critical film thickness
defines ...
Piston Ring Lubrication and Cylinder Bore Wear Analysis, Part I—Theory
Tập 96 Số 3 - Trang 305-313 - 1974
An analytical method developed for determining the bore wear pattern for a
reciprocating piston engine over a complete running cycle is presented. The
method includes the considerations of the hydrodynamic lubrication theory
between the ring and the cylinder bore wall, piston ring geometric and elastic
characteristics, blowby through the piston ring pack, minimum film thickness
permitting film lub...
An Analytical Method to Predict Skidding in Thrust-Loaded, Angular-Contact Ball Bearings
Tập 93 Số 1 - Trang 17-23 - 1971
Dynamics of Rolling-Element Bearings—Part IV: Ball Bearing Results
Tập 101 Số 3 - Trang 319-326 - 1979
Dynamic simulations of the performance of a ball bearing are presented in terms
of the general motion as obtained by integrating the differential equations of
motion of the various bearing elements. It is shown that bearing misalignment
significantly influences the ball/cage and race/cage interaction and, hence, the
stability of cage motion. The increased radial to axial load ratios promote
skiddi...