Simulation and Modelling of Low-Energy Tooth Failure in a Helical Gearbox

The paper presents the model of the toothed gear that allows for determination of the stress at the tooth in the course of simulation of the operation of the toothed gear with manufacturing errors. We analyzed the results of the numerical experiment during which we examined the impact of pitch error on dynamic tooth load. In the final part of the paper we presented and discussed the results of simulation involving changes of the meshing force that result from the development, due to fatigue, of the crack at the tooth root.