Mathematical modelling and computer simulations as an aid to gearbox diagnostics

The paper deals with mathematical modelling and computer simulation as a to ol for aiding gearbox diagnostic inference. The results of computer simulat ions and results obtained by laboratory rigs and field practice are compare d. For investigation by computer simulations different factors are taken in to consideration. The factors are divided into four groups: design factors, production technology factors, operational factors and change of condition factors. Using computer simulation and taking these factors into account: design, production technology, operation and condition change factors lead to DPTOCC inferring diagnostic information of the gearing system condition. The model for a system with a one-stage gearbox with torsional vibration i s presented here as also are models for systems with a one-stage gearbox wh ere both torsional and lateral vibration are taken into consideration and a system with a two-stage gearbox. (C) 2001 Academic Press.