NDLI: Calibrated Non Linear Dissipative Model of Fan Bladed Disk

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Lombard, Jean-Pierre Jean, Pierrick Lubrina, Pascal
Copyright Year	2010
Abstract	The results of non linear modeling of mechanical damped behavior of fan bladed disk are presented in the paper. A combined test/modeling strategy dedicated to the prediction of behavior of bladed disk in all operating flight range is proposed. The proposed methodology is applied on 2 configurations: firstly, on a well known fan stage (wide chord titanium blade with curvilinear attachment) and secondly, on a new one based on woven composite technology. This strategy needs to perform efficient and precise modal tests able to measure as well as possible the damping parameters. The test procedure is set up after trying of different test configurations: the robustness/repeatability of measure is verified and the scatter is quantified. A non linear tool (Snecma in-house code) is used to predict the behavior of the test configuration and allows the identification of damping parameters. These damping parameters are then used to assess the dissipative behavior in operating conditions. This tool is based on DLFT method derived from classical harmonic balance method and allows fast calculations of NL responses. The results presented illustrate the quality of tests measurement and the validity of the non linear model used to predict the characterized physics. The calibration is based on the damping parameters updated on a wide test configurations.
Sponsorship	International Gas Turbine Institute
Starting Page	705
Ending Page	713
Page Count	9
File Format	PDF
ISBN	9780791844014
DOI	10.1115/GT2010-22046
e-ISBN	9780791838723
Volume Number	Volume 6: Structures and Dynamics, Parts A and B
Conference Proceedings	ASME Turbo Expo 2010: Power for Land, Sea, and Air
Language	English
Publisher Date	2010-06-14
Publisher Place	Glasgow, UK
Access Restriction	Subscribed
Subject Keyword	Damping Blades Electromagnetic scattering Flight Chords (trusses) Titanium Disks Robustness Calibration Modeling Physics Woven composites
Content Type	Text
Resource Type	Article

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On Damping Entire Bladed Disks Through Dampers on Only a Few Blades

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Decreasing Bladed Disk Response With Dampers on a Few Blades: Part II—Nonlinear and Blade-Blade Dampers Applications

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