Abradable coating removal in turbomachines: a macroscopic approach accounting for various wear mechanisms - Archive ouverte HAL Access content directly
Conference Papers Year : 2015

Abradable coating removal in turbomachines: a macroscopic approach accounting for various wear mechanisms

Abstract

Abradable materials are widely used as a coating within compressor and turbine stages of modern aircraft engines in order to reduce operating blade-tip/casing clearances and thus maximize the engine energy efficiency. However, recent investigations revealed that the interaction between a blade and these materials may threaten blades structural integrity. Consequently, there is a need for a better understanding of the physical phenomena at play and for an accurate modelling of the interaction in order to predict hazardous events. The cornerstone of related numerical investigations lies in the modelling of the abradable coating removal due to the blade/abradable coating interaction and the associated contact forces along the contact interface. In this context, this article presents a macroscopic model for abradable coating removal accounting for key wear mechanisms including adhesive wear, abrasive wear, micro-rupture wear and machining wear. It is coupled with an in-house numerical strategy for the modelling of full 3D blade/abradable coating interactions within turbomachines and applied to an aircraft engine. Numerical results are compared with respect to existing models and available experimental data. The applicability of the proposed model for 3D interaction simulations is underlined as well as the consistency of the obtained results with experimental observations.
Fichier principal
Vignette du fichier
paperHal.pdf (816.75 Ko) Télécharger le fichier
hal-01188846.zip (2.6 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01188846 , version 1 (19-03-2016)

Licence

Attribution - ShareAlike - CC BY 4.0

Identifiers

Cite

Bérenger Berthoul, Alain Batailly, Mathias Legrand, Laurent Stainier, Patrice Cartraud. Abradable coating removal in turbomachines: a macroscopic approach accounting for various wear mechanisms. ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, ASME, Jun 2015, Montréal, Canada. ⟨10.1115/GT2015-42500⟩. ⟨hal-01188846⟩

Relations

977 View
586 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More