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Experimental and numerical simulation of a rotor/stator interaction event localized on a single blade within an industrial high-pressure compressor

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2016
auteur(s) Batailly Alain; Agrapart Quentin; Millecamps Antoine; Brunel Jean-François
journal (abréviation) Journal of Sound and Vibration (J Sound Vib)
volume (numéro) 375
  
pages 308 – 331
résumé This contribution addresses a confrontation between the experimental simulation of a rotor/stator interaction case initiated by structural contacts with numerical predictions made with an in-house numerical strategy. Contrary to previous studies carried out within the low-pressure compressor of an aircraft engine, this interaction is found to be non-divergent: high amplitudes of vibration are experimentally observed and numerically predicted over a short period of time. An in-depth analysis of experimental data first allows for a precise characterization of the interaction as a rubbing event involving the first torsional mode of a single blade. Numerical results are in good agreement with experimental observations: the critical angular speed, the wear patterns on the casing as well as the blade dynamics are accurately predicted. Through out the article, the in-house numerical strategy is also confronted to another numerical strategy that may be found in the literature for the simulation of rubbing events: key differences are underlined with respect to the prediction of non-linear interaction phenomena.
mots clés Abradable coating; Friction; High-pressure compressor; Nonlinear dynamics; Rotor/stator interaction; Rubbing; Unilateral contact dynamics
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