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Assessment of geometric nonlinearities influence on NASA rotor 37 response to blade tip/casing rubbing events
Delhez, Elise; Nyssen, Florence; Golinval, Jean-Claude et al.
2021In Proceedings of ASME Turbo Expo 2021
Peer reviewed
 

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Keywords :
Structural dynamics; Model reduction; Geometrical nonlinearities; Contact nonlinearities
Abstract :
[en] This paper uses a recently derived reduction procedure to study the contact interactions of an industrial blade undergoing large displacements. The reduction technique consists in projecting the dynamical problem onto a reduction basis composed of Craig-Bampton modes and a selection of their modal derivatives. The internal nonlinear forces due to large displacements are evaluated with the stiffness evaluation procedure and contact is numerically handled using Lagrange multipliers. The numerical strategy is applied on an open industrial compressor blade model based on the NASA rotor 37 blade in order to promote reproducibility of results. Two contact scenarios are investigated: one with direct contact between the blade and the casing and one with an abradable material deposited on the casing. The influence of geometric nonlinearities is assessed in both cases. In particular, contact interaction maps and abradable coating wear pattern maps are used to identify the main interactions that can be detrimental for the engine integrity.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Delhez, Elise  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Nyssen, Florence ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique
Golinval, Jean-Claude  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Batailly, Alain;  Polytechnique Montréal > Département de génie mécanique > Laboratoire d'Analyse Vibratoire et Acoustique
Language :
English
Title :
Assessment of geometric nonlinearities influence on NASA rotor 37 response to blade tip/casing rubbing events
Publication date :
June 2021
Event name :
ASME Turbo Expo 2021
Event organizer :
ASME
Event date :
du 7 juin 2021 au 11 juin 2021
Audience :
International
Main work title :
Proceedings of ASME Turbo Expo 2021
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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