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Computational Model for the Calculation of Natural Vibration Characteristics of a Turbine Bladed Disk

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F23%3A10001576" target="_blank" >RIV/47718684:_____/23:10001576 - isvavai.cz</a>

  • Result on the web

    <a href="https://link.springer.com/chapter/10.1007/978-3-031-45705-0_81" target="_blank" >https://link.springer.com/chapter/10.1007/978-3-031-45705-0_81</a>

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Computational Model for the Calculation of Natural Vibration Characteristics of a Turbine Bladed Disk

  • Original language description

    Bladed disks are structural components of various types of rotating machines. The presented computational method for calculating natural vibration characteristics is based on the cyclic symmetry of structures and is applied to the calculation of natural frequencies and mode shapes of the steam turbine bladed disk with the LSB 54&quot; blades. Blades of an advanced design are continuously coupled in the zone of a shroud and the tie-boss zone by the blades&apos; untwist caused by the action of centrifugal forces at the turbine rotation. The calculated value of the natural frequencies associated with the mode shapes with zero nodal diameters at turbine operational speed appears to be problematic compared to the measured ones. The originally created computational model of the bladed disk is suitable for the calculation of natural frequencies and mode shapes with arbitrary numbers of nodal diameters, zero nodal diameters apart. The paper deals with searching for the approach to the creation of a new model of the steam turbine bladed disk with blades with continuous binding that would improve the compliance of the natural frequencies associated with the mode shapes with zero nodal diameters with the measured ones.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20302 - Applied mechanics

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Mechanisms and Machine Science, Vol. 147

  • ISBN

    978-3-031-45704-3

  • ISSN

    2211-0984

  • e-ISSN

  • Number of pages

    11

  • Pages from-to

    835-845

  • Publisher name

    Springer Science and Business Media B.V.

  • Place of publication

    neuveden

  • Event location

    Tokyo

  • Event date

    Nov 5, 2023

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article

    000276388000134