Modeling support effects-finite element and experimental modal methods

Jonathan R. Buckles; Keith E. Rouch; John R. Baker

doi:10.1115/96-GT-403

Modeling support effects-finite element and experimental modal methods

Jonathan R. Buckles, Keith E. Rouch, John R. Baker

Mechanical and Aerospace Engineering

Producción científica: Conference contribution › revisión exhaustiva

1 Cita (Scopus)

Resumen

The effects of support/foundation dynamics are often significant in high speed turbomachinery, and can affect the stability and response to unbalance. In some cases additional critical speeds are introduced, related to resonances in the foundation or interaction with rotor resonances of foundation resonances. This paper reviews several methods for representing these effects, including (1) reduced matrices from finite element substructures (ANSYS, for example), (2) matrices generated from modal data, and (3) direct use of experimental transfer functions. These methods are implemented in a finite element rotor program in a PC-DOS environment. The application of the methods to two laboratory rotor configurations described and results presented. Situations with a foundation resonance above and near the rotor critical are included. The importance of including coupling effects between supports is shown.

Idioma original	English
Título de la publicación alojada	Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General
ISBN (versión digital)	9780791878767
DOI	https://doi.org/10.1115/96-GT-403
Estado	Published - 1996
Evento	ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996 - Birmingham, United Kingdom Duración: jun 10 1996 → jun 13 1996

Serie de la publicación

Nombre	ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996
Volumen	5

Conference

Conference	ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996
País/Territorio	United Kingdom
Ciudad	Birmingham
Período	6/10/96 → 6/13/96

Nota bibliográfica

Publisher Copyright:
Copyright © 1998 by ASME.

ASJC Scopus subject areas

Energy Engineering and Power Technology
Fuel Technology
Nuclear Energy and Engineering
Aerospace Engineering
Mechanical Engineering

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Buckles, J. R., Rouch, K. E., & Baker, J. R. (1996). Modeling support effects-finite element and experimental modal methods. En Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General (ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996; Vol. 5). https://doi.org/10.1115/96-GT-403

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title = "Modeling support effects-finite element and experimental modal methods",

abstract = "The effects of support/foundation dynamics are often significant in high speed turbomachinery, and can affect the stability and response to unbalance. In some cases additional critical speeds are introduced, related to resonances in the foundation or interaction with rotor resonances of foundation resonances. This paper reviews several methods for representing these effects, including (1) reduced matrices from finite element substructures (ANSYS, for example), (2) matrices generated from modal data, and (3) direct use of experimental transfer functions. These methods are implemented in a finite element rotor program in a PC-DOS environment. The application of the methods to two laboratory rotor configurations described and results presented. Situations with a foundation resonance above and near the rotor critical are included. The importance of including coupling effects between supports is shown.",

author = "Buckles, \{Jonathan R.\} and Rouch, \{Keith E.\} and Baker, \{John R.\}",

note = "Publisher Copyright: Copyright {\textcopyright} 1998 by ASME.; ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996 ; Conference date: 10-06-1996 Through 13-06-1996",

year = "1996",

doi = "10.1115/96-GT-403",

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series = "ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996",

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Buckles, JR, Rouch, KE & Baker, JR 1996, Modeling support effects-finite element and experimental modal methods. En Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General. ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996, vol. 5, ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996, Birmingham, United Kingdom, 6/10/96. https://doi.org/10.1115/96-GT-403

Modeling support effects-finite element and experimental modal methods. / Buckles, Jonathan R.; Rouch, Keith E.; Baker, John R.
Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General. 1996. (ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, GT 1996; Vol. 5).

Producción científica: Conference contribution › revisión exhaustiva

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N2 - The effects of support/foundation dynamics are often significant in high speed turbomachinery, and can affect the stability and response to unbalance. In some cases additional critical speeds are introduced, related to resonances in the foundation or interaction with rotor resonances of foundation resonances. This paper reviews several methods for representing these effects, including (1) reduced matrices from finite element substructures (ANSYS, for example), (2) matrices generated from modal data, and (3) direct use of experimental transfer functions. These methods are implemented in a finite element rotor program in a PC-DOS environment. The application of the methods to two laboratory rotor configurations described and results presented. Situations with a foundation resonance above and near the rotor critical are included. The importance of including coupling effects between supports is shown.

AB - The effects of support/foundation dynamics are often significant in high speed turbomachinery, and can affect the stability and response to unbalance. In some cases additional critical speeds are introduced, related to resonances in the foundation or interaction with rotor resonances of foundation resonances. This paper reviews several methods for representing these effects, including (1) reduced matrices from finite element substructures (ANSYS, for example), (2) matrices generated from modal data, and (3) direct use of experimental transfer functions. These methods are implemented in a finite element rotor program in a PC-DOS environment. The application of the methods to two laboratory rotor configurations described and results presented. Situations with a foundation resonance above and near the rotor critical are included. The importance of including coupling effects between supports is shown.

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Modeling support effects-finite element and experimental modal methods

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