Vibration isolation is needed to protect avionics equipment from adverse aircraft vibration environments. Passive isolation is the simplest means to achieve this goal. The system used here consists of a circular steel ring with a lump mass on top and exposed to base excitation. Sinusoidal and filtered zero-mean Gaussian white noise are used to excite the structure and the acceleration response spectra at the top of the ring are computed. An experiment is performed to identify the natural frequencies and modal damping of the circular ring. Comparison is made between the analytical and experimental results and good agreement is observed. The ring response is also evaluated with a concentrated mass attached to the top of the ring. The effectiveness of the ring in isolating the equipment from base excitation is studied. The acceleration response spectra of a single-degree-of-freedom (s.d.o.f.) system attached to the top of the ring are evaluated and the results are compared with those exposed directly to the base excitation. It is shown that a properly designed ring could effectively protect the avionics from possible damaging excitation levels.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Passive vibration control of airborne equipment using a circular steel ring


    Additional title:

    Passive Schwingungsregelung der Flugzeugausrüstung mit Hilfe eines Stahlkreisringes


    Contributors:
    Ellison, J. (author) / Ahmadi, G. (author) / Kehoe, M. (author)

    Published in:

    Publication date :

    2001


    Size :

    28 Seiten, 23 Bilder, 4 Tabellen, 34 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Designing airborne equipment for vibration

    Mercurio, Jr., S.P. / Belby, M. | Engineering Index Backfile | 1957



    Automated Vibration Level Assessment for Airborne Equipment

    Uyulur, Beytullah / Hacıömeroğlu, Fatih / Güzel, Tuana | SAE Technical Papers | 2023


    FREE VIBRATION OF A LAMINATED CIRCULAR RING SEGMENT

    Kovács, B. | Online Contents | 2001