Tooth Root Stress Relief Hole Optimization on the Spur and Helical Gears
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Keywords:
Involute Spur Gear, Stress Relief Hole, Tooth Root Stress, Finite Element Analysis, Gear DesignAbstract
In this study, optimal design and placement of tooth root stress-relieving holes in spur and helical
gears were made. 3-dimensional models of a spur gear with a module of 3 and several teeth of 20 a helical
gear with the same dimensions and a helical gear with a helix angle of 15 degrees were created in
SolidWorks. 8 different hole combinations were added to the gear models and included in the static analysis
in ANSYS with the same boundary conditions. In the finite element analyses, general gear stress
distribution, tooth root stress distribution, and deformation results were obtained. According to the findings,
a 1.25 mm diameter hole opened on a 50 mm diameter circle gave the most successful result in reducing
spur gear tooth root stress and gear mass. However, an effective result could not be obtained in the helical
gear.
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References
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