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Communication Dans Un Congrès Année : 2007

Study of component mode synthesis methods in a rotor-stator interaction case

Résumé

The study of rotor-stator interactions between blade-tips and outer casings through direct contact in modern turbomachines is very time-consuming if the classical finite element method is used. In order to improve the knowledge over these interaction phenomena, faster methods have to be applied. The construction of reduced-order models using component mode synthesis methods generally allows for dramatic increase in computational efficiency. Two of these methods, namely a fixed interface method and a free interface methods are considered in an original manner to reduce the size of a realistic two-dimensional model. They are then compared in a very specific contact case-study. The equations of motion are solved using an explicit time integration scheme with the Lagrange multiplier method where friction is accounted for. The primary goal of the present study is to investigate the general behavior of such approaches in the presence of contact nonlinearities. It will be shown that in our contact case, a good accuracy can be obtained from a reduced models with very limited number of modes.
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hal-00714525 , version 1 (04-07-2012)

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Alain Batailly, Mathias Legrand, Patrice Cartraud, Christophe Pierre, Jean-Pierre Lombard. Study of component mode synthesis methods in a rotor-stator interaction case. IDETC CIE 2007 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Sep 2007, Las Vegas, United States. pp.1235-1242, ⟨10.1115/DETC2007-34781⟩. ⟨hal-00714525⟩
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