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Non-Linear Vibrations of Multi-Stage Bladed Disks Systems With Friction Ring Dampers

[+] Author Affiliations
Denis Laxalde

Ecole Centrale de Lyon, Ecully; Snecma - Sanfran Group, Moissy-Cramayel, France

Fabrice Thouverez

Ecole Centrale de Lyon, Ecully, France

Paper No. DETC2007-34473, pp. 3-10; 8 pages
doi:10.1115/DETC2007-34473
From:
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 6th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4806-X | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME

abstract

In this paper, we study the non-linear dynamics of a multi-stage system of turbomachinery bladed disks with friction dampers. We focus on the quasi-periodic forced response of this system under multi-frequency rotating excitations. The system’s equations of the motion are expressed in the multi-frequency domain using a multi-frequency harmonic balance method in combination a multi-stage cyclic symmetry reduction. A Dynamic Lagrangian formulation in alternating frequency/time domains is also used for the calculation of the contact and friction forces. In applications we consider a system of two HP compressor stages of integrally bladed disks with friction ring dampers.

Copyright © 2007 by ASME

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