Abstract
Dynamic loads on spur gears are calculated by using an analytical model based on torsional vibrations of gears, and dynamic load variations during a mesh cycle of a tooth are determined. Tooth profile modifications, profile and pitch errors are included in dynamic load calculations. Variable stiffnesses of gear teeth, which are required for dynamic load calculations, and tooth root stresses resulting from dynamic loads are found by using the finite element method. Calculated tooth root stresses are used in fatigue failure analysis.
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