Master thesis and internship[BR]- Master's thesis : Updating and standardization of design tools for the test facilities operated by BEBLUE Cryotech[BR]- Internship
Erdogan, Hasan
Promoteur(s) : Salles, Loïc
Date de soutenance : 5-sep-2024/6-sep-2024 • URL permanente : http://hdl.handle.net/2268.2/20847
Détails
Titre : | Master thesis and internship[BR]- Master's thesis : Updating and standardization of design tools for the test facilities operated by BEBLUE Cryotech[BR]- Internship |
Auteur : | Erdogan, Hasan |
Date de soutenance : | 5-sep-2024/6-sep-2024 |
Promoteur(s) : | Salles, Loïc |
Membre(s) du jury : | Bruls, Olivier
Béchet, Eric |
Langue : | Anglais |
Nombre de pages : | 54 |
Mots-clés : | [en] ’rotordynamics’, ’Campbell’, ’critical speed’, ’FEM’, ’vibration’, ’Bearing Configuration’ |
Discipline(s) : | Ingénierie, informatique & technologie > Ingénierie aérospatiale |
Institution(s) : | Université de Liège, Liège, Belgique |
Diplôme : | Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering" |
Faculté : | Mémoires de la Faculté des Sciences appliquées |
Résumé
[en] The accurate prediction and analysis of critical speeds are paramount for ensuring the
safe and efficient operation of rotating machinery. This study focuses on the rotordynamic
analysis of the Prometheus test rig, a system designed for cryogenic testing in aerospace
applications. Using the Finite Element Method (FEM) in conjunction with the Rotordynamic
Open Source Software(ROSS), this research aims to identify critical speeds and
optimize the rotor-bearing configuration to mitigate resonance risks.
Key aspects of the analysis include the development of a Campbell Diagram, which
visually represents the relationship between rotor speed and system frequencies, highlighting
potential resonance zones. The study further investigates the influence of various bearing
configurations on critical speeds, providing insights into how changes in stiffness, damping,
and positioning affect the dynamic behavior of the rotor system. Experimental data were
used to validate the FEM model, ensuring the accuracy and reliability of the predictions.
The findings from this study offer practical guidelines for optimizing rotor design in
high-speed applications, particularly where cryogenic conditions are present. By enhancing
the understanding of critical speeds and rotordynamic behavior, this work contributes to
the development of more robust and reliable rotating machinery.
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