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Descripción
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| The effect of the structural coupling in the aeroelastic stability of a packet of low-pressure turbine vanes is studied in detail. The dynamics of a 3D sector vane is reduced to that of simplified mass-spring model to enhance the understanding of its dynamics and to perform sensitivity studies. It is concluded that the dynamics of the simplified model retains the basic features of the finite element three-dimensional model. A linear fully coupled analysis in the frequency domain of the 3D vane sector has been conducted. It is concluded that the small structural coupling provided by the casing and the inter-stage seal is essential to explain the experimental evidences. It is shown that the use of fully coupled methods is necessary to retain the mode interaction that takes place in this type of configurations. | |
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Internacional
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Si |
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Nombre congreso
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12th International Symposium on Unsteady Aerodynamics, Aeroacoustics & Aeroelasticity of Turbomachines ISUAAAT12 |
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Tipo de participación
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960 |
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Lugar del congreso
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Revisores
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Si |
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ISBN o ISSN
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0-7918-3824-2 |
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DOI
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Fecha inicio congreso
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01/09/2009 |
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Fecha fin congreso
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04/09/2009 |
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Desde la página
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1 |
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Hasta la página
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9 |
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Título de las actas
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EFFECT OF THE STRUCTURAL COUPLING ON THE AEROELASTIC STABILITY OF A PACKET OF VANES |