Numerical simulation of tool/abradable material interaction experiments

Abstract : Applying abradable coating on the casing of turbomachines has been widely recognized as a robust solution advantageously combining the adjustment of operating clearances with the reduction of potential non-repairable damages. Thus, the modeling of this material is a growing field of investigation. Based on the numerical strategy proposed and detailed in previous publication by the same authors, the present study aims at capturing the mechanical behavior of abradable coating in the context of high speed interaction with a rigid tool. The plastic law given is first enriched in order to take into account strain rate dependence. The sensitivity of the model regarding its main numerical parameters is assessed and highlights the role of each of these parameters. The calibration of numerical results with respect to experimental results lead to very satisfying results that confirm that the proposed strategy is well-suited for the modeling of abradable coating. Finally, the newly developped viscoplastic law is applied to a 3D rotor/stator interaction case to determine the criticity of strain rate dependence in the case of blade/casing contact.
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Dernière modification le : jeudi 4 juillet 2013 - 13:41:04
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  • HAL Id : hal-00841147, version 1

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Alain Batailly, Marion Cuny, Mathias Legrand. Numerical simulation of tool/abradable material interaction experiments. Turbo Expo 2012, Jun 2012, Copenhague, Denmark. pp.GT2012-68171, 2012. <hal-00841147>

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