Gears with an asymmetric involute gear tooth form were analyzedto determine their bending and contact stresses relative tosymmetric involute gear tooth designs which are representative ofhelicopter main drive gears. Asymmetric and baseline (symmetric)toothed gear test specimens were designed, fabricated and tested toexperimentally determine their single-tooth bending fatiguestrength and scuffing resistance. Also, gears with an analyticallyoptimized root fillet form were tested to determine theirsingle-tooth bending fatigue characteristics relative to baselinespecimens with a circular root fillet form. Test resultsdemonstrated higher bending fatigue strength for both theasymmetric tooth form and optimized fillet form compared tobaseline designs. Scuffing resistance was significantly increasedfor the asymmetric tooth form compared to a conventional symmetricinvolute tooth design.
- Edition:
- 10
- Published:
- 10/01/2010
- Number of Pages:
- 15
- File Size:
- 1 file , 740 KB
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