Accounting for Nonlinear Structural Interactions in

7 days ago

Montréal QC, Canada École Polytechnique de Montréal Full time

**Accounting for nonlinear structural interactions in blade design**:

- Réf **ABG-126935**
- Sujet de Thèse- 15/11/2024- Contrat doctoral- École Polytechnique de Montréal- Lieu de travail- Montréal - Canada- Intitulé du sujet- Accounting for nonlinear structural interactions in blade design- Champs scientifiques- Sciences de l’ingénieur
- Mots clés- vibrations, nonlinear dynamics, aircraft engines, rotor/stator interactions**Description du sujet**:
**Context and objectives**

More stringent environmental constraints and a very competitive global context force manufacturers to face new challenges in order to improve the efficiency of turbomachines, be it in the aerospace sector or for power generation. The impossibility to compromise safety or the environmental footprint of such systems means that in early design stages designers must now understand and account for nonlinear vibration phenomena - such as blade/casing contacts - that are still only partially characterized today. The proposed Ph.D. project is part of a larger research program that aims at developing a numerical strategy for the simulation, the characterization and the consideration of blade/casing contact phenomena within compressor blade design stages using two complementary solution paradigms: in the time domain and in the frequency domain. This research program will give the opportunity to both industrial partners to share their common knowledge and expertise on this topic in order to develop a uniform numerical tool suited both for gas turbines blades and aircraft engine blades.

The proposed research has three main objectives:

- **G2-continuous parameterization of blabdes.** A new parameterization will allow to merge recent developments related to blade design from an aerodynamics standpoint with those related to a structural standpoint.
- **Identification of industry relevant quantities of interest** to predict the sensitivity of a blade profile to nonlinear structural interactions.
- **Large scale optimization campaign of open and industrial blade models.**

**Work environment**

**Prise de fonction**:

- 01/09/2025**Nature du financement**:

- Contrat doctoral**Précisions sur le financement**:

- NSERC Alliance project**Présentation établissement et labo d'accueil**:

- École Polytechnique de Montréal**Intitulé du doctorat**:

- Doctorat en génie mécanique**Pays d'obtention du doctorat**:

- Canada**Etablissement délivrant le doctorat**:

- ECOLE POLYTECHNIQUE-
- 31/12/2024

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