High cycle fatigue of blades caused by forced vibration is an outstanding problem in turbine machines such as turbo engines and ground gas turbines. Dynamical sensitivity analysis (DSA) is put forward and the mathematic model is erected according to blades. DSA on blades includes sensitivity analysis on inherent characteristic (DSAI) and sensitivity analysis on excitation environment (DSAE). The influence laws of dynamical parameters are gained through DSA, and therefore the optimization design on blades is feasible. DSAE is presented by dint of numerical methods, aerodynamic forces in engines possess multifrequency and spatial distributing characteristics, so DSAE on blades is performed against these characteristics and some results are obtained. Finally the resonance criteria are advanced and a new dynamical design method is put forward.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite





    Protecting turbine blades

    Elaine Motyka | Online Contents | 2017


    Stress analysis of impulse turbine blades

    Thakker, A. / Khaleeq, H.B. / Hourigan, F. et al. | Tema Archive | 2001