scholarly journals Load Distribution on the Contact Line of Helical Gear Teeth : Part 1 Fundamental Concept

1963 ◽  
Vol 6 (22) ◽  
pp. 336-343 ◽  
Author(s):  
Kunikazu HAYASHI
Keyword(s):  
Contact Line ◽  
Load Distribution ◽  
Helical Gear ◽  
Fundamental Concept ◽  
Gear Teeth

The Compliance of Solid, Wide-Faced Spur Gears

1990 ◽  
Vol 112 (4) ◽  
pp. 590-595 ◽  
Author(s):  
J. H. Steward
Keyword(s):  
Experimental Data ◽  
Contact Line ◽  
Load Distribution ◽  
3D Model ◽  
Spur Gear ◽  
Point Load ◽  
Spur Gears ◽  
Line Load ◽  
Gear Teeth ◽  
Theoretical Results

In this paper, the requirements for an accurate 3D model of the tooth contact-line load distribution in real spur gears are summarized. The theoretical results (obtained by F.E.M.) for the point load compliance of wide-faced spur gear teeth are set out. These values compare well with experimental data obtained from tests on a large spur gear (18 mm module, 18 teeth).

Solution of Load Distribution on the Contact Line of Helical Gears With EHL Theory

1994 ◽  
Author(s):  
Yu Tonghui ◽  
Chen Chenwen ◽  
Wang Liqin
Keyword(s):  
Contact Line ◽  
Load Distribution ◽  
Multigrid Method ◽  
Numerical Solutions ◽  
Three Dimensional ◽  
Elastohydrodynamic Lubrication ◽  
Helical Gear ◽  
Contact Lines ◽  
Helical Gears ◽  
Special Boundary Condition

Abstract On the base of analysis of the effects of each term in Renolds equaiton on the lubrication state of helical gears, the three dimensional elastohydrodynamic lubrication (EHL) problem is discomposed into two dimensional problems to deal with. A special boundary condition for helical gear EHL problem is led in and applying multigrid method (MGM), numerical solutions for the helical gear EHL problem are accomplished along the contact line. Film shapes and pressure ditributions with typical EHL features are obtained at discreted points on the contact line. The procedure presented here to calculate the load distribution on the contact line can also be used to calculate the load shares among different contact lines.

An Investigation of the Influence of Shaft Misalignments on Bending Stresses of Helical Gear With Lead Crown

2007 ◽  
Author(s):  
M. A. Hotait ◽  
D. Talbot ◽  
A. Kahraman
Keyword(s):  
Load Distribution ◽  
Helical Gear ◽  
Experimental Results ◽  
Distribution Model ◽  
Strain Gauges ◽  
Gear Teeth ◽  
Face Width ◽  
The Face ◽  
Bending Stresses ◽  
Different Levels

In this study, combined influence of shaft misalignments and gear lead crown on the load distribution and tooth bending stresses is investigated experimentally. A set of helical gear pairs having various amounts of lead crown was tested under loaded, low-speed conditions with varying amounts of tightly-controlled shaft misalignments. Gear teeth were instrumented through strips of strain gauges along the face width of gears at the tooth fillet region near the start of active profile. Variations of root strains along the face width were recorded for different levels of shaft misalignments and gear lead crown. At the end, the experimental results were correlated to the predictions of a gear load distribution model and recommendations were made on how much lead crown is optimal for a given misalignment condition.

LOAD AND STRESS VARIATION ALONG HELICAL GEAR TEETH

1996 ◽  
Vol 20 (2) ◽  
pp. 159-174 ◽  
Author(s):  
A.H. Elkholy
Keyword(s):  
Load Distribution ◽  
Normal Load ◽  
Helical Gear ◽  
Contact Lines ◽  
Stress Variation ◽  
Gear Teeth ◽  
Profile Modification ◽  
Machining Errors ◽  
The Individual ◽  
Experimental Substantiation

A criterion for calculating load distribution on contact lines of helical gear teeth is introduced. The criterion which is based upon stiffness calculations assumes that the sum of tooth deflection, profile modification and machining errors at the pairs of contacting teeth are all equal. It is also assumed that the sum of the normal loads contributed by each pair of contacting teeth is equal to the total normal load. Once the individual tooth loads are determined, fillet and contact stresses are determined from the applied load and tooth geometry. A detailed example is outlined to explain the criterion. Experimental substantiation is also presented to prove the validity of the criterion.

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