Wear Prediction for Helical Gears Used in EMU
DOI:
https://doi.org/10.63313/AERpc.9045Keywords:
Dry friction, Helical gear, Adhesion wear, Meshing characteristicAbstract
By combining Hertz contact theory with the Archard wear formula, a wear model for the tooth surface of helical cylindrical gears used in high-speed trains was developed, and its wear characteristics were numerically simulate.The simulation findings show that, under ideal operating conditions, the tooth sur-face of the helical gear pair wears non-uniformly along the tooth width direc-tion, with the least wear near the pitch circle and the most wear at the root of the smaller gear. Based on this, the effects of various modules, tooth width, he-lix angle, and input torque on tooth surface wear are investigated further. The analysis shows that changes in module, input torque, and tooth width all have a considerable impact on the distribution of tooth surface wear, although varia-tions in helix angle have a modest impact.
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