Paper published in a book (Scientific congresses and symposiums)
EFFECTS OF THE SEAL WIRE ON THE NONLINEAR DYNAMICS OF THE AIRCRAFT ENGINE TURBINE BLADES
Tüfekci, Mertol; El Haddad, Fadi; Salles, Loïcet al.
2023 • In Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
[en] Complicated systems made of multiple components are known to be difficult to model, considering their solutions can change dramatically even with the slightest variations in conditions. Aircraft engines contain such complicated systems, and some components in aircraft engines’ turbines can cause significant changes in the system’s overall response. Hence, this study is focused on investigating the behaviour of a turbine blade of an aircraft engine and the effects of the contact between the blade and the seal wire on the dynamics of the blade-disc system. The investigation is performed via various numerical simulations in time and frequency-domains. One sector of the bladed disc is modelled using the finite element method with the lock plate and the seal wire imposing cyclic symmetry boundary conditions in the static, modal, and frequency-domain forced response analyses. In time-domain analyses, the cyclic symmetry is replaced with simplified displacement restricting boundary conditions. The time-domain analysis contains steady-state forced responses of the system. The results show that contact with the seal wire is not a major source of nonlinearity and damping. The contacts with the lock plate contribute more to the vibration damping than the seal wire. However, compared to the contacts at the root of the blade, both components remain less significant with regard to frictional damping and nonlinearity.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Tüfekci, Mertol; Department of Mechanical Engineering, Imperial College London, London, United Kingdom
El Haddad, Fadi; Department of Mechanical Engineering, Imperial College London, London, United Kingdom
Salles, Loïc ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Mechanical aspects of turbomachinery and aerospace propulsion ; Department of Mechanical Engineering, Imperial College London, London, United Kingdom
Setchfield, Richard; Rolls-Royce plc, Derby, United Kingdom
Renson, Ludovic; Department of Mechanical Engineering, Imperial College London, London, United Kingdom
Language :
English
Title :
EFFECTS OF THE SEAL WIRE ON THE NONLINEAR DYNAMICS OF THE AIRCRAFT ENGINE TURBINE BLADES
Publication date :
2023
Event name :
Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
Event place :
Boston, Usa
Event date :
26-06-2023 => 30-06-2023
Audience :
International
Main work title :
Structures and Dynamics - Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
The authors would like to thank Innovate UK and the ATI for supporting this research as part of the MALIT programme (113180) as well as the computational resources and support provided by the Imperial College Research Computing Service (http://doi.org/10.14469/hpc/2232).
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