Interacting force estimation during blade/seal rubs

Romain Mandard (1, 2, 3) , Jean-François Witz (1) , Xavier Boidin (1) , Jacky Fabis (4) , Yannick Desplanques (1, 3) , Jean Meriaux (2)

1 LML - Laboratoire de Mécanique de Lille - FRE 3723
2 SNECMA Villaroche [Moissy-Cramayel]
3 Centrale Lille
4 ONERA - The French Aerospace Lab [Lille]

Abradable seals are used in aeronautical compressors to minimize the blade–casing clearance while ensuring the integrity of the mechanical parts in the invent of contact. Considering the tight clearance, in-flight blade–seal interactions may occur and have to be taken into account when designing abradable seals. The blade–seal interacting force is difficult to access but constitutes a key feature to understand the phenomena and to develop numerical models. The present paper aims to present an experimental methodology to estimate the blade–seal interacting force from indirect measurements. The methodology has been applied to a short interaction produced on a dedicated test rig in conditions representative of the full-scale configuration. The obtained force was correlated with the wear profile of the abradable seal.

Mots clés: Blade–seal interaction; Abradable material; Force estimation

Domaines: Sciences de l'ingénieur [physics]

Romain Mandard, Jean-François Witz, Xavier Boidin, Jacky Fabis, Yannick Desplanques, et al.. Interacting force estimation during blade/seal rubs. Tribology International, 2014, 82, 10 p. ⟨10.1016/j.triboint.2014.01.026⟩. ⟨hal-01081384⟩