OPTIMIZATION OF BLADED DISK PASSIVE DAMPING ELEMENT

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU102800" target="_blank" >RIV/00216305:26210/11:PU102800 - isvavai.cz</a>
Result on the web
<a href="http://engmech.cz/2011/im/doc/EM2011_proceedings.pdf" target="_blank" >http://engmech.cz/2011/im/doc/EM2011_proceedings.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
OPTIMIZATION OF BLADED DISK PASSIVE DAMPING ELEMENT
Original language description
This paper is aimed at reducing vibrations of bladed disk in particular operating state. The damping element used in this contribution is realized by a strap with isosceles trapezoidal cross-section area which is placed in hoop dovetail groove in the blade shrouding. The friction effect between the damping element and the groove side walls is included. Sliding between the contact surfaces leads to the dissipation of energy which causes decreasing of undesirable vibrations. The frictional force is influenced by centrifugal force acting on the damping element. The centrifugal force depends on disk angular speed, mass of the damping element and also on the size of contact area. It is shown that the axial vibrations of bladed disk in particular operating state is influenced by dimensions of the damping element cross-section Dimensional optimization is used to find the optimal dimensions. The process of finding optimal dimensions is described in this paper. The finite element model of blade
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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