A Dynamic Finite Element (DFE) formulation for coupled Flap - Lead-Lag bending free vibrations of rotating pre-twisted propeller blades is presented. The weighted residual approach, together with analytical expressions of uncoupled bending dynamic shape functions, are used to obtain the frequency dependent stiffness matrix corresponding to the coupled vibration of a blade element. The dynamic shape functions are found based on the dynamic basis functions, which are the homogeneous solution of the uncoupled uniform axially loaded beam element differential equations of motion. Numerical verification has demonstrated the practical applicability of the theory by the coupled natural frequencies obtained for a scaled cantilever propeller blade.


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    Titel :

    Dynamic Finite Element (DFE) formulation for coupled flap-lag vibrations of propeller blades


    Beteiligte:
    Hashemi, S.M. (Autor:in) / Golnaraghi, M.F. (Autor:in)


    Erscheinungsdatum :

    2000


    Format / Umfang :

    9 Seiten, 17 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A Dynamic Finite Element (DFE) Formulation for Coupled Flap-Lab Vibrations of Propeller Blades

    Golnaraghi, M. F. / Hashemi, S. M. / American Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 2000



    On the Coupled Flap-Lag Bending Vibration of Propeller Blades: An Exact Dynamic Finite Element Formulation

    Hashemi, S. M. / Richard, M. J. | British Library Online Contents | 2000


    Propeller-excited vibrations -- Five blades or four

    Archer, S. | Engineering Index Backfile | 1962


    Practical Experience with Finite Element Analysis of Propeller Blades

    Brockett, T. / SNAME / Ships Machinery Committee | British Library Conference Proceedings | 1994