Bulletin of scientific research results Bulletin of scientific research results Бюллетень результатов научных исследований 2223-9987 72489 10.20295/2223-9987-2023-4-27-35 Проблематика транспортных систем PROBLEMATIC OF TRANSPORT SYSTEM Проблематика транспортных систем Investigation of Fatigue Aging of Insulation of Traction Electric Motors of Diesel Locomotives Under Cyclic Load Исследование усталостного старения изоляции тяговых электродвигателей тепловозов при циклической нагрузке Шрайбер Марина Александровна Shrayber Marina Aleksandrovna goshapti4ka@yandex.ru

кандидат технических наук;

candidate of technical sciences;

 Петербургский государственный университет путей сообщения Императора Александра I Россия Emperor Alexander I St. Petersburg State Transport University Russian Federation 19 12 2023 19 12 2023 2023 4 27 35 18 12 2023 https://atjournal.ru/en/nauka/article/72489/view

Цель: Выполнить анализ процессов усталостного старения изоляции тяговых электрических машин локомотивов при действии циклических нагрузок в эксплуатации. Методы: При решении типовых задач усталостной прочности изоляционных материалов электрических машин локомотивов в исследовании используются периодические циклы нагружения. Результаты: Анализ процессов усталостного старения материалов изоляции электрических машин показывает, что основными параметрами, увеличивающими интенсивность старения, являются частота и амплитуда цикла нагревания, а термомеханические напряжения возрастают при увеличении скорости нагрева и амплитуды температуры. Практическая значимость: Определение усталостных характеристик материала изоляции имеет очень важное значение при моделировании его повреждений, что позволит повышать надежность электрических машин современных локомотивов на стадиях проектирования, изготовления, модернизации и эксплуатации.

Purpose: To analyze the processes of fatigue aging of the insulation of traction electric machines of locomotives under cyclic loads in operation. Methods: When solving typical problems of fatigue strength of insulating materials of electric locomotives, periodic loading cycles are used in the study. Results: The analysis of the processes of fatigue aging of insulation materials of electrical machines shows that the main parameters that increase the intensity of aging are the frequency and amplitude of the heating cycle. Thermomechanical stresses increase with rise of heating speed and temperature amplitude. Practical significance: Determination of the fatigue characteristics of the insulation material is very important when modeling its damage, which will increase the reliability of electric machines of modern locomotives at the stages of design, manufacture, modernization and operation.

 Тяговый электродвигатель тепловоза изоляция электрических машин локомотивов Traction electric motor of a diesel locomotive insulation of electric machines of locomotives

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