Thermoelastoviscoplastic Bilinear Compressive Constitutive Law of an AlSi-PE Abradable Material Based on Experimental Investigations

Autor: S. Skiba, S. Philippon, L. Faure, B. Chevrier
Přispěvatelé: Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Safran Aircraft Engines, Ecole Nationale d'Ingénieurs de Metz (ENIM)
Rok vydání: 2021
Předmět:
Materials science
MESH: Abradable coating
Materials Science (miscellaneous)
Constitutive equation
[PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph]
Bilinear interpolation
02 engineering and technology
engineering.material
01 natural sciences
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]
0203 mechanical engineering
Coating
0103 physical sciences
Composite material
Porosity
ComputingMilieux_MISCELLANEOUS
010302 applied physics
[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
Compression (physics)
MESH: Compression
MESH: Temperature
020303 mechanical engineering & transports
MESH: Constitutive law
Mechanics of Materials
Solid mechanics
engineering
Gas compressor
Casing
Zdroj: Journal of Dynamic Behavior of Materials
Journal of Dynamic Behavior of Materials, Springer Verlag, 2021, 7 (3), pp.499-508. ⟨10.1007/s40870-021-00294-8⟩
ISSN: 2199-7454
2199-7446
DOI: 10.1007/s40870-021-00294-8
Popis: International audience; Abradable coatings are part of dynamic seals used in aircraft engines to reduce inter-stage leakages. However, during running, severe interactions may occur between the rotating blades and the coating of the casing leading to these parts getting damaged. Numerical approaches simulating these interactions could be a way to prevent these contact risks but they require both a characterization of the thermomechanical behavior of the abradable material and of the blade. This paper presents a quasi-static compression behavior study of a heterogeneous and porous AlSi-PE abradable used in the low-pressure compressor of aircraft engines. Combined with the results obtained for tests conducted at high compression strain-rates and extreme temperatures recently published in a previous paper (Skiba et al., in Dyn Behav Mater 6:213–223, 2020. 10.1007/s40870-020-00242-y), a thermoelastoviscoplastic bilinear constitutive law is proposed. This formulation allows the prediction of the macroscopic behavior of a heterogeneous and porous AlSi-PE abradable material from room temperature to 360 °C and with strain-rates ranging from 10–3 to 103 s−1.
Databáze: OpenAIRE
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