The computation of the burst of turbine disks for aeronautical engines is a current problem of great practical interest. Turbine disks are stressed by severe loads, for this reason the knowledge of the burst angular velocity is of primary importance for the whole safety of the aircraft during ordinary missions or extra-ordinary conditions that engines may encounter during service. In this work, a numerical method to predict the burst speed is presented, introducing the physical phenomenon at the base of the burst: the inertial instability. The method is based on Finite Element simulations taking into account the spin-softening effect which leads to instability and therefore to the burst of the disk. Two analytical solutions of rotating structures are used for a preliminary validation of the numerical results that simulate the inertial instability: in both cases the calculated burst speed agrees with the analytical results. The correlation between the nonlinear stress-strain curve and the inertial instability is then addressed by means of simulations that are performed in the end on a real disk subjected to typical loads acting on it. In conclusion, a comparison between the semi-empirical method of Robinson, which is at the base of standard disks certifications, and the FE approach is presented in terms of burst speed prediction to show that FE calculation is more accurate to predict the limit speed.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The importance of the material properties on the burst speed of turbine disks for aeronautical applications


    Weitere Titelangaben:

    Bedeutung der Werkstoffeigenschaften für die Bruchgeschwindigkeit von Turbinenrädern für die Luftfahrt


    Beteiligte:


    Erscheinungsdatum :

    2014


    Format / Umfang :

    11 Seiten, Bilder, Tabellen, 25 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Broadband aeronautical burst data transmission in 4DT navigation

    Zhang, Chao / Zhang, Yaxin / Ma, Lu | IEEE | 2014


    Broadband aeronautical burst data transmission in the 4DT navigation

    Zhang, Chao / Zhang, Yaxin / Ma, Lu | IEEE | 2014


    The possibilities of an aeronautical gas turbine

    Norman, C.A. | Engineering Index Backfile | 1919


    AERODYNAMIC STUDIES IN HIGH-SPEED COMPRESSORS DEDICATED TO AERONAUTICAL APPLICATIONS

    Leboeuf, F. / Trebinjac, I. / Ottavy, X. et al. | British Library Conference Proceedings | 2010


    Compactor trolley for aeronautical applications

    IACOBUCCI LUCIO | Europäisches Patentamt | 2021

    Freier Zugriff