| Summary: | 碩士 === 淡江大學 === 機械工程研究所 === 78 ===
Stress intensity factors of crack in gear tooth may be determined by using the Boundary Element Method (BEM). Cracks are assumed to appear in the fillet of the gear. Special crack tip elements are used to simulate the sigular displacement field around the crack tip.
For a special kind of spur gear, this study discusses the relation between SIF and the following parameters: length of the crack, the inclination angle of the crack and the location of the applied load. Also, the direction of fatigue crack propagation may be predicted. Although the loading system is not symmetric, accurate results may be obtained byanalizing a single gear tooth.
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