- Tytuł:
- Dynamic analysis of the control stage of a high speed steam turbine
- Autorzy:
-
Sławiński, D.
Zakrzewski, W. - Powiązania:
- https://bibliotekanauki.pl/articles/175498.pdf
- Data publikacji:
- 2012
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
control stage
residual stresses
initial displacement blade
vibrations blade - Opis:
- This paper analyzes the possibility of resonances within a control stage of a high speed turbine. An original method for steady state operation is used for the analysis of the stiffness matrix representing: initial displacement blade (nominal shape blade obtained by nominal working point of turbine) and residual stresses following local crossing yield plastic strain. In the analysis there has been found a possibility of occurance of the resonance frequency, and mistuning by showing the safe working ranges. The calculation used the 3D modal and harmonic analysis within computational solid dynamics (CSD) and the results were compared with the 0D data from literature. After local crossing of yields stresses, on the basis of the harmonic analysis, there has been shown operation of the blade in the resonance point. Before crossing the yield stresses the blade is working in mistuning and a safe point.
- Źródło:
-
Transactions of the Institute of Fluid-Flow Machinery; 2012, 124; 41-49
0079-3205 - Pojawia się w:
- Transactions of the Institute of Fluid-Flow Machinery
- Dostawca treści:
- Biblioteka Nauki
Artykuł