THE NUMERICAL TECHNIQUE FOR TURBINE BLADES AND UNDERPLATFORM DAMPERS INTERACTION MODELING BASED ON SUBSTRUCTURE METHOD / Semenova Irina,Sazhenkov Nikolai,Nikhamkin Mikhail,Semenov Sergey // . - 2017. - V. , l. .

ISSN/EISSN:

нет данных / нет данных

Type:

Proceedings Paper

Abstract:

Friction dampers are commonly used in jet and turboprop engines to decrease vibration stresses of turbine blades by irreversible conversion of mechanical energy into heat. Effectiveness of the energy transfer depends on dampers design, material and operational conditions. Optimization of dampers design is a complex task usually associated with nonlinear contact problems analysis and complicated experimental verification. It also coupled with high time costs causing the engineering task to be modified into compound research problem. The paper presents time effective numerical technique for gas turbine blades underplatform dry-friction dampers efficiency study. The presented technique is based on finite-element method with a numerical model reduction by Craig-Bampton and Guyan algorithms. The model consisted of dummy blades pair with wedge damper between the platforms. Technique allows considering three dimensional shapes of parts, nonlinear contact forces, friction, various operational loads and conditions. The model was verified by experiment completed on special test rig based on vibration shaker and 3D laser vibrometer. Relationship between the blades oscillation amplitude and the centrifugal load on the damper was obtained. Optimal operational range with maximum damper efficiency was defined. Impact of so called anti-phase and in-phase modes of adjacent blades on damper efficiency was investigated.

Author keywords:

friction damper; turbine blade; finite-element method; anti-phase mode; in-phase mode; vibration shaker; laser vibrometer

DOI:

нет данных

Web of Science ID:

ISI:000400878600018

Соавторы в МНС:

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Другие поля

Поле	Значение
Book-Group-Author	ASME
Booktitle	PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2016, VOL. 9
Note	ASME International Mechanical Engineering Congress and Exposition (IMECE2016), Phoenix, AZ, NOV 11-17, 2016
Organization	Amer Soc Mech Engineers
Publisher	AMER SOC MECHANICAL ENGINEERS
Address	THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
Language	English
Article-Number	V009T12A018
ISBN	978-0-7918-5063-3
Research-Areas	Engineering
Web-of-Science-Categories	Engineering, Mechanical
Funding-Acknowledgement	Development of numerical and experimental methods {[}9.576.2014/K]
Funding-Text	The work was supported by Grant No 9.576.2014/K ``Development of numerical and experimental methods for twin-shaft aircraft engines vibration safety providing{''}.
Number-of-Cited-References	7
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Doc-Delivery-Number	BH5FU