The Effect of Manufacturing Errors on the Predicted Dynamic Factors of Spur Gears


This paper studies the effect of manufacturing errors on predicted dynamic factors of spur gears. Three dynamic factors are defined and studied: dynamic load factors, dynamic tooth force factors, and dynamic bending moment factors. Three computer programs for predicting dynamics are discussed; a forced vibration analysis using six degrees of freedom, a multi-degree Dynamic Transmission Error Program (DYTEM) using a six degree of freedom model, and a Geared Rotor Dynamics Program that uses a finite element method. Using experimental data provided by National Aeronautics and Space Administration the DYTEM program is used for dynamic factors prediction. The effects of AGMA 10, 12 and 14 profile tolerances are shown.
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