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Faculté des Sciences appliquées
Faculté des Sciences appliquées
MASTER THESIS
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Alternative approach to model wear evolution of a blade undergoing contact interactions with the surrounding casing

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Masrour, Khadija ULiège
Promotor(s) : Ponthot, Jean-Philippe ULiège
Date of defense : 6-Sep-2018/7-Sep-2018 • Permalink : http://hdl.handle.net/2268.2/5488
Details
Title : Alternative approach to model wear evolution of a blade undergoing contact interactions with the surrounding casing
Author : Masrour, Khadija ULiège
Date of defense  : 6-Sep-2018/7-Sep-2018
Advisor(s) : Ponthot, Jean-Philippe ULiège
Committee's member(s) : Golinval, Jean-Claude ULiège
Béchet, Eric ULiège
Batailly, Alain 
Language : English
Keywords : [en] wear, contact interactions, blade, geometry update, Craig-Bampton
Discipline(s) : Engineering, computing & technology > Aerospace & aeronautics engineering
Research unit : LAVA Polytechnique de Montreal
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering"
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[en] In an aeronautical engine the clearances between the rotating bladed-disks and the casing are reduced to improve the aerodynamical performances, but it increases the risk of contact between static and rotating components, thus between the blades' tip and the surrounding casing.
This thesis is concerned with the modeling of wear phenomena on an engine blade proposing an alternative approach for the geometry update. The basic idea of this approach is, instead of re-meshing or eliminating at each iteration the worn out elements such as it is performed in the traditional re-meshing and killing element methods for wear treatment problems, is to interpolate by a polynomial function the structural matrices in correspondence of a small subset of interpolating points that corresponds to different amounts of wear and recover the structural matrices for all other configurations by the build polynomial function.
The advantage of this technique is the simplicity of the operations involved at each iteration leading to significative decreases in the computational time and memory storage.


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Author

  • Masrour, Khadija ULiège Université de Liège > Master ingé. civ. aérospat., à fin.

Promotor(s)

Committee's member(s)

  • Golinval, Jean-Claude ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
    ORBi View his publications on ORBi
  • Béchet, Eric ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur
    ORBi View his publications on ORBi
  • Batailly, Alain
  • Total number of views 58
  • Total number of downloads 479










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