Finite Element Model of Aging of the Insulation of Locomotive Traction Electric Motors

The methodology is substantiated and an algorithm for modeling multilayer insulation of traction electric motors is developed, which is a simple but promising tool that allows the application of layer adhesion zone modeling strategies in the engineering analysis of problems of the occurrence and growth of cracks, using the capabilities of the finite element method. The results of modeling the propagation of fatigue damage in normal and tangential stress modes, as well as in a mixed loading mode, show that the law of accumulation of fatigue damage differs for the propagation of delamination in different modes due to differences in the mechanism of development. It should be noted that the development of an effective model for the accumulation of fatigue damage requires a large amount of experimental data, which is currently in short supply.

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