Abstract
This paper presents a study on the bending fatigue strength of thin-rimmed spur gears under various loading conditions. The bending fatigue test of a thin-rimmed spur gear with a fan-shaped hole was carried out under various loading conditions, and the test results were examined on the basis of the root stress computed by the finite element method (FEM). A reverse bending fatigue test of the thin-rimmed spur gear was carried out, and the relation between the rim thickness and the fatigue damage on the tensile and compressive sides of the gear tooth was also examined. On the basis of these results, the characteristics of the bending fatigue strength of the thin-rimmed spur gear were determined.
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