Bending and Compressive Stress Analysis of External Helical Gearsets of Varying Contact Ratios


In an attempt to better understand how the durability of a helical gearset is affected by changes in profile (mP) and face contact ratio (mF), an analytical investigation was done in which mP was varied. Thirty-two combinations were studied in total. The gears were modeled using the hybrid finite element computational method Contact Analysis Programming Package (CAPP), of Advanced Numerical Solutions. The results of this analysis suggest that for a given level of face contact ratio, an advantage in bending and compressive stress exists at the mP=2.1 level over all of the others considered. Increasing both mP and mF had the effect of smoothing out the bending and compressive stresses when viewed as a function of roll angle.
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