Inter-slip damping of twisted blades in opposed bundles under rotation

Result code in IS VaVaI

RIV/61388998:_____/12:00381562 - isvavai.cz

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Inter-slip damping of twisted blades in opposed bundles under rotation

Original language description

This paper presents the numerical and experimental solutions of inter-slip damping of twisted blades in opposed bundles. The numerical approach is based on a space finite element model which presents three twisted blades connected by dry friction couplings in their heads. The couplings are considered to be surface-to-surface contacts with friction. The damping effect is evaluated from the free attenuation after a resonant vibration. The resonant vibration of the blades was excited by pulses of a singleelectromagnet during the experiment. The responses of the blades were measured by strain-gauges with a slip-ring signal transmission at rotation. The dynamic behaviour of the blades and the results of damping are in a good accordance with the numerical modelling.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

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Project

GA101/09/1166: Research of dynamic behaviour and optimalization of complex rotating systems with non-linear couplings and high damping materials

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

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

Article name in the collection

10th International Conference on Vibrations in Rotating Machinery

ISBN

978-0-85709-452-0

ISSN

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e-ISSN

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Number of pages

10

Pages from-to

293-302

Publisher name

Institution of Mechanical Engineers

Place of publication

London

Event location

London

Event date

Sep 11, 2012

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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