An implicit method was developed for integrating the equations of motion for a lumped-mass model of a rotor dynamics system. An aside, a closed-form solution to the short-bearing theory was also developed for a damper with arbitrary motion. The major conclusions are that the method is numerically stable and that the computation time is proportional to the number of elements in the rotor dynamics model rather than to be cube of the number. This computer code, for the first time, allows the simulation of a complex rotor bearing system experiencing nonlinear transient motion and displays the vast amount of results in an easily understood motion-picture format - a 10-minute, 16-millimeter, color, sound motion-picture supplement. An example problem with 19 mass elements in the rotor dynamics model took 0.7 second of central processing unit time per time step on IBM 360-67 computer in a time-sharing mode. (Jensen)


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    Titel :

    Direct integration of transient rotor dynamics


    Weitere Titelangaben:

    Direkte Integration fuer Uebergangszustaende bei Rotoren


    Beteiligte:
    Kascak, A.F. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1980


    Format / Umfang :

    23 Seiten


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch




    Direct integration of transient rotor dynamics

    Kascak, Albert F. | TIBKAT | 1980



    Experimental study of transient dynamics of a flexible rotor

    Hibner, D. H. / Buono, D. F. | TIBKAT | 1976


    Rotor transient analysis

    Allaire, P. E. / Choy, K. C. / Gunter, E. J. | NTRS | 1980