Discussion: “Dynamically Loaded Pivoted Pad Journal Bearings: Mobility Method of Solution” (ten Napel, W. E., Moes, H., and Bosma, R., 1976, ASME J. Lubr. Technol., 98, pp. 196–204)

1976 ◽  
Vol 98 (2) ◽  
pp. 205-205
Author(s):  
J. F. Booker
Keyword(s):  
Journal Bearings ◽  
Dynamically Loaded ◽  
Method Of Solution ◽  
Mobility Method

Dynamically Loaded Journal Bearings: Mobility Method of Solution

1965 ◽  
Vol 87 (3) ◽  
pp. 537-546 ◽  
Author(s):  
J. F. Booker
Keyword(s):  
Numerical Solutions ◽  
Journal Bearings ◽  
Dynamically Loaded ◽  
Method Of Solution ◽  
Mobility Method

An approach is presented for simplified analytical, graphical, and numerical solutions to extremely general problems of dynamically loaded bearings. A series of examples illustrates the application of the method to problems of varying complexity.

Analytical Curve Fits for Solution Parameters of Dynamically Loaded Journal Bearings

1984 ◽  
Vol 106 (4) ◽  
pp. 421-427 ◽  
Author(s):  
P. K. Goenka
Keyword(s):  
Journal Bearing ◽  
Journal Bearings ◽  
Solution Time ◽  
Pressure Curve ◽  
Element Analysis ◽  
Analytical Curve ◽  
Dynamically Loaded ◽  
Method Of Solution ◽  
Mobility Method ◽  
Solution Accuracy

The mobility method of solution is frequently used for analyzing dynamically loaded journal bearings. Curve fits of journal-bearing solutions are used in this method. All the currently available curve fits are lacking in one or more of three important features—the solution accuracy, the solution detail, and the solution time. A new set of analytical curve fits is presented in this paper. The set includes: the two components of mobility vectors, location and magnitude of maximum film pressure, and the starting and finishing angles of the pressure curve. For an ideal journal bearing, the new curve fits give accuracy and solution detail comparable to an expensive finite-element analysis, while keeping the solution time comparable to that required for the short-bearing approximation. An example is presented to demonstrate the use of the new curve fits.

Dynamically Loaded Pivoted Pad Journal Bearings: Mobility Method of Solution

1976 ◽  
Vol 98 (2) ◽  
pp. 196-204 ◽  
Author(s):  
W. E. ten Napel ◽  
H. Moes ◽  
R. Bosma
Keyword(s):  
Reasonable Agreement ◽  
Journal Bearings ◽  
Numerical Results ◽  
Radial Bearing ◽  
Dynamically Loaded ◽  
Method Of Solution ◽  
Mobility Method ◽  
Angle Method

The mobility-whirl angle method as introduced by Booker in 1964, has been applied to pivoted pad journal bearings to predict the behavior of a rotor supported in this type of bearing. Both the single pivoted pad and the complete radial bearing with three equally spaced radial pads have been analyzed. It will be shown that the method is restricted to the case where the value of the load on each pad has to be known from the start. Some experiments have been carried out on a squeeze apparatus. The results are in reasonable agreement with numerical results.

scholarly journals Mobility Method Applied to Calculate the Lubrication Properties of Bearing under Dynamic Loads

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Tao He ◽  
Xiqun Lu ◽  
Jingzhi Zhu
Keyword(s):  
Dynamic Analysis ◽  
Mechanical Systems ◽  
Journal Bearings ◽  
Numerical Results ◽  
Dynamic Loads ◽  
Analysis Program ◽  
Computational Program ◽  
Dynamically Loaded ◽  
Mobility Method ◽  
Lubrication Properties

The analytical mobility method for dynamically loaded journal bearings was presented, with the intent to include it in a general computational program, such as the dynamic analysis program, that has been developed for the dynamic analysis of general mechanical systems. An illustrative example and numerical results were presented, with the efficiency of the method being discussed in the process of their presentation.

Cavitation in dynamically loaded journal bearings using mobility method

Wear ◽  
1996 ◽  
Vol 193 (2) ◽  
pp. 155-162 ◽  
Author(s):  
Bruno Vincent ◽  
Patrick Maspeyrot ◽  
Jean Frene
Keyword(s):  
Journal Bearings ◽  
Dynamically Loaded ◽  
Mobility Method

Dynamically-Loaded Journal Bearings: Numerical Application of the Mobility Method

1971 ◽  
Vol 93 (1) ◽  
pp. 168-174 ◽  
Author(s):  
J. F. Booker
Keyword(s):  
Solution Procedure ◽  
Journal Bearings ◽  
Analysis Problem ◽  
Numerical Application ◽  
Arbitrary Loading ◽  
Dynamically Loaded ◽  
Mobility Method

For dynamically loaded journal bearings the classic analysis problem is prediction of the motion of a journal center under arbitrary loading. In most cases its speed and simplicity makes the mobility method seem the logical solution procedure. This paper reviews the method and details its numerical application, including particular examples for reciprocating machinery.

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