Rotor to stator contacts in turbomachines. Review and application

Georges Jacquet-Richardet (1) , Mohamed Torkhani (2) , Patrice Cartraud (3) , Fabrice Thouverez (4) , Thouraya Nouri-Baranger (1) , Mathieu Herran (5) , Claude Gibert (4) , Sébastien Baguet (1) , Patricio Almeida (4) , Loïc Peletan (1)

1 DCS - Dynamique et Contrôle des Structures
2 LAMSID - UMR 8193 - Laboratoire de Mécanique des Structures Industrielles Durables
3 GeM - Institut de Recherche en Génie Civil et Mécanique
4 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes
5 Turbomeca

The safety of turbomachines requires controlling the risks caused by contacts occurring between fixed and rotating parts. Undesirable phenomena induced by bladed wheel/casing interactions are caused by the forced excitation of the natural modes of a blade leading to its damage or by potentially dangerous couplings between the modes of the casing and those of the wheel. Rotor-stator contacts may also lead to various types of dangerous behavior, including the well known configurations of dry whirl and dry whip. The paper proposes a large-scale literature review and examines existing numerical models and experimental setups used for highlighting the phenomenology involved in different rotor to stator contacts configurations. It confirms the great complexity of the problems which, by nature, are considerably nonlinear and involve multiphysics and multiscale coupled behaviors.

Mots clés: Rotor; Blade; Contacts; Non-linear dynamics; Instability; Physical phenomena

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]; Vibrations [physics.class-ph]; Vibrations [physics.class-ph]

Georges Jacquet-Richardet, Mohamed Torkhani, Patrice Cartraud, Fabrice Thouverez, Thouraya Nouri-Baranger, et al.. Rotor to stator contacts in turbomachines. Review and application. Mechanical Systems and Signal Processing, 2013, 40 (2), pp.401-420. ⟨10.1016/j.ymssp.2013.05.010⟩. ⟨hal-00934050⟩