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- W2296989441 abstract "This paper presents a numerical method to analyze flutter stability of low-pressure steam turbine blading. Any bladed disk normal vibration mode as well as the stage operating condition may be considered. The stability considerations are based on a quasi-steady power-per-vibration-cycle approach. The aerodynamic work per cycle of vibration of a bladed disk mode is calculated form the time integral of the product of the periodic time varying force and the specified harmonic vibration amplitude. The aerodynamic forces are obtained from the pressure distribution database generated from a separate 2-D cascade analysis for compressible inviscid flow for a wide range of flow angles. The method accounts for the kinematic corrections of instantaneous relative flow angle due to the vibratory motion. The non-linear material damping energy of the bladed disk as a function of the vibration amplitude is calculated using Lazan`s power law. The flutter stability is determined by the net power flow to the bladed disk at various amplitudes of vibration. Some results for the last stage of a low pressure steam turbine are presented." @default.
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- W2296989441 date "1994-12-31" @default.
- W2296989441 modified "2023-09-23" @default.
- W2296989441 title "Flutter stability investigation of low-pressure steam turbine bladed disks" @default.
- W2296989441 hasPublicationYear "1994" @default.
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