publication . Article . 2010

Modelling of the bladed disk vibration with damping elements in blade shroud

Kellner J.; Zeman V.;
Open Access English
  • Published: 01 Jul 2010
  • Publisher: University of West Bohemia
  • Country: Czech Republic
Abstract
The requirement for wide operation range of steam turbine can cause, that the blades work close to resonant frequency. For decreasing of blade’s vibration there are placed damping elements in the blade shroud. These elements are calculated for dissipation of the vibration energy. The analytical method of blade and bladed disk modal analysis is introduced. The method enables to include blades both with and without damping elements in shroud. The mathematical model of the bladed disk is prepared for including damping effects in contact planes.
Subjects
arXiv: Physics::Fluid DynamicsPhysics::History of Physics
free text keywords: vibrace olopatkovaných disků, tlumící prvky, modální vlastnosti, bladed disk vibration, damping elements, modal properties, Mechanics of engineering. Applied mechanics, TA349-359

[1] Sˇ asˇek, J., Zeman, V., Hajzˇman, M., Modal properties of rotating disks. Proceedings of the 22nd Computational Mechanicss 2006, University of West Bohemia, Vol. 2, pp. 593-600.

[2] Rao, S. S., The finite element method of engineering. Oxford: Pergamon Press, 1989.

[3] Kellner, J., Zeman, V., Infuences of dynamic stiffnes, centrifugal forces and blade's elastic seating on blade modal properties, Proceedings of the 8th Applied Mechanics 2006, University of West Bohemia in Pilsen, pp. 47-48.

[4] Zeman, V., Sˇasˇek, J., Byrtus, M., Modelling of rotating disk vibration with fixed blades, Modelling and optimization of physical systems 8 (2009), Silesian University of Technology, Gliwice, pp. 125-130.

[5] Kellner, J., Vibration of turbine blades and bladed disks (in Czech), Doctoral thesis, University of West Bohemia in Pilsen, 2009.

[6] Riwin, E. I., Stiffness and damping in mechanical design, Wayne state university Detroit, Michigan, New York 1999.

Powered by OpenAIRE Research Graph
Any information missing or wrong?Report an Issue