In this study, an efficient approach for modeling the vibration of multi-stage rotors is proposed in order to allow more realistic predictions of the free and forced response of bladed disks. The reduced-order modeling approach is based on component mode synthesis, with each stage (bladed disk) treated as a separate component. Thus, each component retains cyclic symmetry, and single-sector models may be used for calculating the component modes. Because adjacent stages typically have different numbers of blades, the single-stage models are synthesized by projecting the stage-to-stage interface motion onto a common basis of circumferentially harmonic shapes. In this manner, any mismatch between sector sizes and finite element meshes at the interface can be handled systematically and automatically, without requiring additional multi-point constraints. For further size reduction, secondary modal analysis is performed on the entire synthesized model. Therefore, only a small set of multi-stage modes are retained in the final reduced-order model, yielding an extremely compact model that retains high accuracy relative to the parent finite element model.
Skip Nav Destination
ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 24–28, 2005
Long Beach, California, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4738-1
PROCEEDINGS PAPER
Multi-Stage Modeling of Turbine Engine Rotor Vibration
Sang Heon Song,
Sang Heon Song
University of Michigan, Ann Arbor, MI
Search for other works by this author on:
Matthew P. Castanier,
Matthew P. Castanier
University of Michigan, Ann Arbor, MI
Search for other works by this author on:
Christophe Pierre
Christophe Pierre
University of Michigan, Ann Arbor, MI
Search for other works by this author on:
Sang Heon Song
University of Michigan, Ann Arbor, MI
Matthew P. Castanier
University of Michigan, Ann Arbor, MI
Christophe Pierre
University of Michigan, Ann Arbor, MI
Paper No:
DETC2005-85740, pp. 1533-1543; 11 pages
Published Online:
June 11, 2008
Citation
Song, SH, Castanier, MP, & Pierre, C. "Multi-Stage Modeling of Turbine Engine Rotor Vibration." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Long Beach, California, USA. September 24–28, 2005. pp. 1533-1543. ASME. https://doi.org/10.1115/DETC2005-85740
Download citation file:
28
Views
Related Proceedings Papers
Related Articles
Component-Mode-Based Reduced Order Modeling Techniques for Mistuned Bladed Disks—Part II: Application
J. Eng. Gas Turbines Power (January,2001)
A Linearized Theory on Ground-Based Vibration Response of Rotating Asymmetric Flexible Structures
J. Vib. Acoust (June,2006)
Dynamics of Multistage Bladed Disks Systems
J. Eng. Gas Turbines Power (October,2007)
Related Chapters
Research Tools
Bearing Dynamic Coefficients in Rotordynamics: Computation Methods and Practical Applications
Stress Analysis of Gas Turbine Blade under Different Loads Using Finite Element Modeling
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Introduction I: Role of Engineering Science
Fundamentals of heat Engines: Reciprocating and Gas Turbine Internal Combustion Engines