Abstract
AbstractAny impurity or defects in gears due to various factors affect power or torque transmission resulting in unwanted noise and vibrations. These impurity/defects generate deformations such as crack, spalls and transmission error. This necessitates to study the effects arising due to these causes on power transmission. Numerous methods including analytical, numerical, experimental and/or computer simulations are used now a days to analyse the results or predictions of the effects and their minimization processes. This paper deals with the analysis of the effects of one such factor, pitch error on transmission error (TE) and time-varying mesh stiffness (TVMS) in spur gear using SciLab and Ansys software. The TVMS for gear without pitch error is calculated analytically using computer programme in SciLab and FEA in Ansys software. These results were then compared, and afterwards, the TE and TVMS are determined by considering pitch error of 1% and 2% variation using FEA in Ansys. These variations in pitch are sufficient to analyse the effects. Various graphs are plotted representing TE and TVMS for pinion rotation angle. It is observed that the pitch error affects TE and TVMS of a gear pair in a significant way. The presented work will help in the early prediction/detection and reduction of malfunctioning in gear box, which will result in increasing transmission power in gear box section which are used in wind turbines, automobiles, helicopter, etc.KeywordsSpur gearAnsysSciLabPitch errorTransmission errorTime-varying mesh stiffness
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