Mesh stiffness calculation of a spur gear pair with tooth profile modification and tooth root crack

A nonlinear finite element contact mechanics model of a helical gear pair was used to study the effect of intentional tooth profile modifications on durability of helical gear pairs. Both two-dimensional (2D) and three-dimensional (3D) modifications were considered. A detailed parametric study was performed to quantify the changes in the contact and bending stresses as a function of tooth profile modification parameters as compared to an unmodified gear pair baseline. The combined influence of modification parameters and torque transmitted on the maximum stresses is described. Results indicate that both bending and contact stresses of a helical gear pair are increased significantly when 2D modifications are applied, potentially causing an underestimation of the actual stress values when the modifications are not included in stress calculations. When properly selected, 3D modifications cause significantly less stress increases.

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Study on Helical Tooth Profile Modification of Planetary Gear Transmission on the Basis of Gear Transmission Error

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.86.47 ◽

2011 ◽

Vol 86 ◽

pp. 47-50

Author(s):

Yu Tang ◽

Shan Chang ◽

Zhi Qiang Wang ◽

Kun Zhang

Keyword(s):

Planetary Gear ◽

Transmission Error ◽

Tooth Profile ◽

Gear Transmission ◽

Mesh Stiffness ◽

Profile Modification ◽

Gear Mesh ◽

Tooth Profile Modification ◽

Planetary Transmission ◽

Gear Mesh Stiffness

In order to minimize the fluctuation of gear transmission error (GTE) about the planetary gear transmission. A method was developed to deciding tooth profile modification curves of planetary transmission. According to the condition of the invariable design load, computing the dynamic characteristics of the planetary transmission system under modified and un-modified gear. At the same time, the compare is carried through of the dynamic characteristics for modified and un-modified gear. The results of the dynamic calculation indicate that the profile modification method can make the amplitudes of gear mesh stiffness change calmness and reduce the amplitudes of gear mesh stiffness by this method in paper. At last, the conclusion can be obtained that the tooth profile modification can reduce the vibration and noise of the planetary transmission system.

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ON THE EFFECT OF THE TOOTH PROFILE MODIFICATION ON THE DYNAMIC LOAD AND THE SOUND LEVEL OF THE SPUR GEAR

Bulletin of JSME ◽

10.1299/jsme1958.25.1474 ◽

1982 ◽

Vol 25 (207) ◽

pp. 1474-1481 ◽

Cited By ~ 25

Author(s):

YOSHIO TERAUCHI ◽

HIROMASA NADANO ◽

MINORU NOHARA

Keyword(s):

Dynamic Load ◽

Spur Gear ◽

Sound Level ◽

Tooth Profile ◽

Profile Modification ◽

Tooth Profile Modification

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Influence Analysis of Machining Errors on Bearing Capability of Internal Gear Pair

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.299-300.1142 ◽

2011 ◽

Vol 299-300 ◽

pp. 1142-1145

Author(s):

Kai Huang ◽

Yan Dong Zhang

Keyword(s):

Tooth Profile ◽

Gear Pair ◽

Influence Analysis ◽

Profile Modification ◽

Pair Model ◽

Tooth Profile Modification ◽

Machining Errors ◽

Internal Gear

The gear pair model with machining errors is constructed based on the software such as Pro/E and ANSYS, and in this basis, the influence analysis about the machining errors on the bearing capability is carried out. The analysis results show that the said influence varies with the increase of load, and however, the tooth profile modification would be more important compared with the machining errors.

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