Modelling of a blade couple with contact in shrouding by means of Rayleigh beam finite elements
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43926612" target="_blank" >RIV/49777513:23520/15:43926612 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Modelling of a blade couple with contact in shrouding by means of Rayleigh beam finite elements
Original language description
Presented work deals with modelling of a couple of twisted blades with rhombic shrouds (that are considered to be rigid). This blade couple is clamped into a rigid disk rotating with constant angular velocity. Either of the blades is divided into Rayleigh beam finite elements (blade finite elements) with varying cross-sectional parameters along each element and six degrees of freedom in each of the nodes. Since the finite element models based on the Rayleigh beam theory tend to slightly overrate naturalfrequencies and underrate deflections in comparison with finite element models including shear deformation effects, the Young's modulus, the Poisson's ratio and the torsion resistance of every blade finite element were being tuned. Then, a modal analysis of the rotating blade couple with smooth contact surfaces (without friction) is performed and comparison of calculated natural frequencies in dependence on rotational speed and contact stiffness between blade shrouds is shown.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
JR - Other machinery industry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů