North American freight railroads collectively use a computer-controlled servohydraulic test bed called the Simuloader to performfull-scale multiaxial fatigue tests of railcars at accelerated rates. It is used to verify analyses, reveal design deficiencies, test modifications and provide safety from failures not acconted for in standard specification tests. While material coupon testing can address very precisely and directly the science of mechanical fatigue, full-scale testings is often used to address gross design, manufacturing and production-related fatigue issues. The input waveformes used to animate this machine are typically created from combinations of both time histories and cycle counted data. Simulations are accelerated through the utilization of only those events that produce significant stresses on structure. This paper describes the test bed and its vehicle interfaces, the stess analysis of a test car, acquisition of service input and car body response data, drive file development techniques and the iterative process of tuning the machine/railcar system to improve global response accuracy. The complex data gathering and reduction process associated with creating and tuning drive files for this railcar test is illustrated using data from experiments recently performed by the railroad industry.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Railcar service spectra generation for full-scale accelerated fatigue testing


    Weitere Titelangaben:

    Beschleunigte Dauerfestigkeitsprüfung für Schienenfahrzeuge


    Beteiligte:
    Smith, K.B. (Autor:in) / Parker, E.S. (Autor:in) / Iler, D.J. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    23 Seiten, 12 Bilder, 2 Tabellen, 15 Quellen





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Testing railcar engines

    Engineering Index Backfile | 1958


    Testing railcar engines

    Engineering Index Backfile | 1957


    Testing railcar engines

    Engineering Index Backfile | 1957


    Full-Scale Fatigue Testing

    Sunder, R. | Springer Verlag | 2016


    Railcar door apparatus and railcar

    KAWASHIMA TAKAHIRO / GOTO TSUNETOSHI / HIRATA HIROYUKI | Europäisches Patentamt | 2016

    Freier Zugriff