Informations générales
Intitulé de l'offre : Post-doctoral researcher (M/F) Modeling of the mechanical behavior up to failure of a CMC for aeronautical applications using an embedded fibers approach (H/F)
Référence : UMR5801-GUICOU-001
Nombre de Postes : 1
Lieu de travail : PESSAC
Date de publication : lundi 10 février 2025
Type de contrat : Chercheur en contrat CDD
Durée du contrat : 12 mois
Date d'embauche prévue : 1 avril 2025
Quotité de travail : Complet
Rémunération : Between 2991€ and 3417€ gross monthly salary depending on experience
Niveau d'études souhaité : Doctorat
Expérience souhaitée : Indifférent
Section(s) CN : 09 - Ingénierie des matériaux et des structures, mécanique des solides, biomécanique, acoustique
Missions
Due to their superior thermomechanical properties and low density, Ceramic Matrix Composites (CMC) are ideal candidates for use in high-temperature sections of aircraft engines. Safran Ceramics is developing carbide-based CMCs for these aeronautical applications. The design and qualification of CMC components require a comprehensive understanding of the mechanisms governing their mechanical behavior and strength across multiple scales. A new modeling approach using an embedded fibers model was developed at LCTS as part of a recently completed doctoral thesis (https://theses.fr/2024BORD0259). This approach addresses scale separation challenges in these materials by directly modeling the coupling between microscale damage mechanisms and their macroscopic effects. The thesis results demonstrated the model's capability to accurately predict damage progression through failure in CMCs, establishing a foundation for further research.
This project aims to complete the development and validation of this approach while applying the model to advanced materials studies in support of Safran Ceramics' technical objectives.
Activités
- Verify the model's numerical robustness through systematic evaluation of mesh discretization, parameter sensitivity, and convergence characteristics
- Validate the model's applicability across diverse scenarios, including complex loading conditions and alternative material architectures. This validation will be supported by parallel experimental work providing test data for comprehensive model verification.
- Enhance the model's accuracy by implementing improvements in key areas such as residual stress calculations, stochastic behavior representation, and failure mode prediction
- Facilitate model deployment and provide technical support to Safran Ceramics teams
Compétences
- Computational mechanics (modeling/simulation)
- Finite element analysis (Abaqus)
- Programming (Python, C++)
Contexte de travail
The position will be located at the Laboratory of Thermostructural Composites (LCTS) in Pessac (33) with regular travel expected to Safran Ceramics (33).
This work will be conducted in a restricted access zone (ZRR), as defined in decree n°2011-1425 relating to the protection of the nation's scientific and technical potential (PPST). The acceptance of applications will be subject to the validation of the ZRR access request.
Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.
Contraintes et risques
N/A
Informations complémentaires
N/A