A Mixed Lubrication Theoretical Model and Experimental Verification of Rotary Lip Seals

2014 ◽  
Vol 50 (3) ◽  
pp. 137 ◽  
Author(s):  
Fei GUO
Keyword(s):  
Theoretical Model ◽  
Experimental Verification ◽  
Mixed Lubrication ◽  
Lip Seals

A theoretical model of the knee and ACL: Theory and experimental verification

1992 ◽  
Vol 25 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Deb A. Loch ◽  
Zongping Luo ◽  
Jack L. Lewis ◽  
Nathaniel J. Stewart
Keyword(s):  
Theoretical Model ◽  
Experimental Verification

Steady-State Theoretical Model of an Electro-Hydraulic Single-Disk Pilot Valve

1992 ◽  
Vol 114 (2) ◽  
pp. 293-298 ◽  
Author(s):  
Y. Sun ◽  
G. A. Parker
Keyword(s):  
Steady State ◽  
Theoretical Model ◽  
Experimental Verification ◽  
Control Device ◽  
Null Condition ◽  
Electromagnetic Model ◽  
Disk Valve ◽  
Single Disk ◽  
Electromagnetic Characteristics ◽  
Pilot Valve

The paper describes an electro-hydraulic single floating-disk valve suitable for use as a pilot control device. For this type of application proportional action involving small movements of the disk for the null condition is required. The theory for the steady-state linearized analysis of both the fluid and electromagnetic characteristics is developed. Experimental verification of the electromagnetic model is also described.

Mixed Lubrication of “Parallel” Plane Sliders

1972 ◽  
Vol 39 (1) ◽  
pp. 36-40
Author(s):  
D. S. Bedi ◽  
M. J. Hillier
Keyword(s):  
Theoretical Model ◽  
Friction Coefficient ◽  
Critical Speed ◽  
Mixed Lubrication ◽  
Parallel Plane ◽  
Stick Slip ◽  
Lubrication Conditions ◽  
Film Lubrication ◽  
Slip Phenomenon ◽  
Fluid Film Lubrication

A theoretical model for the friction coefficient indicates two critical speeds of sliding. The lower critical speed corresponds to a change-over from boundary to mixed lubrication conditions, the higher critical speed a transition to full fluid-film lubrication at angles of inclination less than 0.01 deg. The first critical speed appears to be associated with the “stick-slip” phenomenon.

scholarly journals Experimental verification of new features of bearing operation under combined loading conditions

2021 ◽  
Vol 17 (3) ◽  
pp. 278-287
Author(s):  
Valeriy V. Kirilovskiy ◽  
Yuri V. Belousov
Keyword(s):  
Theoretical Model ◽  
Experimental Verification ◽  
Traditional Method ◽  
Geometric Shape ◽  
Experimental Results ◽  
Combined Loading ◽  
Loading Conditions ◽  
Structural Elements ◽  
Elastic Line ◽  
Bearing Assembly

Bearing units of lifting machines, products of construction, road, aviation, space and other branches of technology are very important structural elements, since the failure of even one bearing can cause the failure of the entire product. The results of experimental verification of the theoretical model of bearing operation under combined loading conditions are presented. The behavior under load of bearing units in the most general case can be represented by a sequence of five design schemes, expressed in the form of five statically indeterminate beams. The purpose of the experiments was to test this model under real loading conditions. The experiments were based on the analysis of the geometric shape of the curved elastic line, which the shaft of the bearing assembly acquires under load. The experimental results confirmed the validity of the model and showed that the previously generally accepted model of a two-support beam is not implemented. The conclusion is confirmed that in responsible lifting machines, as well as in responsible products of construction, road, aviation, space and other branches of technology, it is impractical to calculate bearings according to the traditional method, since an erroneous value of bearing durability can be obtained, overestimated from 28.37 to 26.663.9 times.

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