Experimental Investigation of Bladed Disk Dynamics at Design Speed Under Synchronous Vibration
- 1 October 2021
- journal article
- conference paper
- Published by American Institute of Aeronautics and Astronautics (AIAA) in AIAA Journal
- Vol. 59 (10), 4123-4133
- https://doi.org/10.2514/1.j059827
Abstract
This work presents an experimental and computational investigation of a rotating bladed disk excited with air jets. The bladed disk is accelerated through critical speeds corresponding to specific engine orders of interest while air jets apply a constant forcing. These conditions induce synchronous vibrations in the blades. The experimental results were used to compute mistuning and damping values of the system, which were used in the computational analyses. This work uses a parametric reduced order model (PROM) that can adjust the system stiffness based on the rotational speed within the reduced space. Component mode mistuning was coupled with the PROM to create a mistuned model capable of capturing the mistuned system dynamics. Computational values for the blade frequency, amplitude, and damping were compared with experimental results to show how the computational model presented in this work can be used to characterize a rotating bladed disk.Keywords
Funding Information
- Siemens Energy Inc.
This publication has 25 references indexed in Scilit:
- Reduced-Order Modeling Approach for Blisks with Large Mass, Stiffness, and Geometric MistuningAIAA Journal, 2012
- A Statistical Characterization of the Effects of Mistuning in Multistage Bladed DisksJournal of Engineering for Gas Turbines and Power, 2011
- Experimental Investigation on Natural Characteristics and Forced Response of Bladed DisksApplied Mechanics and Materials, 2011
- Wheel VibrationPublished by Elsevier BV ,2009
- Reduction of Multistage Disk Models: Application to an Industrial RotorJournal of Engineering for Gas Turbines and Power, 2008
- Compact, Generalized Component Mode Mistuning Representation for Modeling Bladed Disk VibrationAIAA Journal, 2007
- Mistuning Identification of Bladed Disks Using a Fundamental Mistuning Model—Part I: TheoryJournal of Turbomachinery, 2004
- Underplatform Dampers for Turbine Blades: Theoretical Modeling, Analysis, and Comparison With Experimental DataJournal of Engineering for Gas Turbines and Power, 1998
- A parametric study of vibration of rotating pre-twisted and tapered low aspect ratio cantilever platesJournal of Sound and Vibration, 1981
- Coupling of substructures for dynamic analyses.AIAA Journal, 1968