Assessment of durability and reliability of ET41 series locomotive wheels based on laboratory tests

• Autorzy: Witaszek Mirosław

Identyfikatory

DOI

10.29354/diag/130527

Warianty tytułu

PL

Ocena trwałości i niezawodności kół lokomotyw serii ET41 na podstawie badań laboratoryjnych

• Języki publikacji: EN

Abstrakty

EN

The article presents the method of determination of life and reliability of rail vehicles wheels on the basis of the wear model developed on the basis of laboratory tests results. The method allowed quantitative assessment of the impact of various factors on the life of the wheels due to flange and tread wear. It was stated that the most significant impact on life resulting from the flange wear is exerted by the share of curves in track length, whereas life due to tread wear - longitudinal creepage of the tread with regard to the rail. The reliability assessment was performed using the Monte Carlo method. It allows to take into account randomness of both interaction conditions and the wear process. The determined reliability was described by the Weibull’s distribution. The calculations were made for the ET41 series electrical freight locomotives. The method presented in this work can be suitable for preparation of schedules of wheel repairs and thus contribute to the increase of ride safety and comfort and therefore to the decrease of the costs of maintenance of the rail vehicles.

PL

Artykuł przedstawia metodę określania trwałości i niezawodności kół pojazdów szynowych w oparciu o model zużycia opracowany na podstawie badań laboratoryjnych. Umożliwiła ona ilościową ocenę wpływu różnych czynników na trwałość kół, ze względu na zużycie obrzeża i powierzchni tocznej. Stwierdzono, że najistotniejszy wpływ na trwałość, wynikającą ze zużycia obrzeża, wywiera udział łuków w długości toru, natomiast na tę wywołaną zużyciem powierzchni tocznej - poślizg wzdłużny tej powierzchni względem szyny. Do oceny niezawodności wykorzystano metodę Monte Carlo. Pozwala to na uwzględnienie losowości zarówno warunków współpracy, jak i samego procesu zużycia. Wyznaczoną niezawodność opisano rozkładem Weibulla. Obliczenia przeprowadzono dla towarowych lokomotyw elektrycznych serii ET41. Metoda zaprezentowana w niniejszej pracy może być przydatna przy sporządzaniu harmonogramu napraw kół i dzięki temu przyczynić się do poprawy bezpieczeństwa i komfortu jazdy, a także do obniżenia kosztów utrzymania pojazdów szynowych.

Słowa kluczowe

EN

rail wheels; durability; reliability; wear model

PL

koła kolejowe; trwałość; niezawodność; model zużycia

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2020
• Tom: Vol. 21, No. 4
• Strony: 57--66
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Witaszek Mirosław

• Silesian University of Technology, Department of Automotive Vehicle Service, Faculty of Transport, Katowice, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).