0
TECHNICAL PAPERS

Maximum Amplification of Blade Response due to Mistuning: Localization and Mode Shape Aspects of the Worst Disks

[+] Author and Article Information
Alejandro J. Rivas-Guerra, Marc P. Mignolet

Arizona State University, Department of Mechanical and Aerospace Engineering, Tempe, AZ 85287-6106

J. Turbomach 125(3), 442-454 (Aug 27, 2003) (13 pages) doi:10.1115/1.1506958 History: Received March 04, 2002; Online August 27, 2003
Copyright © 2003 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Single-degree-of-freedom per blade bladed disk model (all mj are equal)
Grahic Jump Location
Blisk example: (a) blisk view, (b) blade sector finite element mesh, and (c) natural frequency versus nodal diameter plot
Grahic Jump Location
Amplification factor as a function of |z0| for different engine orders r
Grahic Jump Location
Amplification factor as a function of the engine order r for different values of |z0|
Grahic Jump Location
Amplification factor for the three-blade partial mistuning with wall as a function of |z0|,r=6=N/4
Grahic Jump Location
Convergence of the two resonant mode shapes of the worst disk, as optimized by the localization-based approach, to those given by Eqs. (656667686970) as |z0|→1,r=3
Grahic Jump Location
Convergence of the parameter Δ for the two natural frequencies of the worst disk, as optimized by the localization based approach, to those given by Eq. (70) as |z0|→1,r=3
Grahic Jump Location
Amplification factor as a function of engine order r for |z0|=1 as computed by partial mistuning, perturbation, and a full optimization
Grahic Jump Location
Relative difference between the Whitehead upper limit and the amplification factors obtained for |z0|=1 and r=N/12 with the perturbation approach, a full optimization, and partial mistuning with five and seven-blade sectors (PM (5) and PM (7), N=24 only)
Grahic Jump Location
Optimum mistuning pattern, i.e., frequency deviations δj, Eq. (82), for the blisk of Fig. 2, case 1. The arrows indicate deviations out of the range shown, δ2=177.6,δ21=21.65, and δ24=−0.967.
Grahic Jump Location
Optimum mistuning pattern, i.e. frequency deviations δj, Eq. (82), for the blisk of Fig. 2, case 2. The arrow indicates a deviation out of the range shown, δ24=−0.179.
Grahic Jump Location
Resonant mode shapes of the worst disk for the blisk of Fig. 2, case 1.
Grahic Jump Location
Resonant mode shapes of the worst disk for the blisk of Fig. 2, case 2
Grahic Jump Location
Fourier transforms of the resonant mode shapes of the worst disks for the blisk of Fig. 2, (a) case 1, (b) case 2

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In