A mistuned forced response analysis of an embedded compressor blisk using a reduced order model


Conference Paper

Copyright © 2018 ASME. Accuracy when assessing mistuned forced response analyses is still a mayor concern. Since a full coupled analysis is still very computational expensive, several simplifications and reduced order models are carried out. The use of a reduction method, the assumptions and simplifications, generate different uncertainties that challenge the accuracy in the results. Experimental data are needed for validation and also to understand the propagation of these uncertainties. This paper shows a detailed mistuned forced response analysis of a compressor blisk. The blisk belongs to the Purdue Three-Stage(P3S) Compressor Research Facility. Two different stator-rotor-stator configurations of 38 and 44 upstream stator vanes are taken into consideration. Several loading conditions are analyzed at three different speed lines. A reduced order model known as subset nominal mode (SNM), has been used for all the analyses. This reduction takes as a basis a set of modes within a selected frequency spectrum. A detailed comparison between the predicted and measured results have been performed, showing a good agreement for the high loading conditions.

Full Text

Duke Authors

Cited Authors

  • Gutierrez, M; Kielb, RE; Petrie-Repar, P; Key, NL

Published Date

  • January 1, 2018

Published In

  • Proceedings of the Asme Turbo Expo

Volume / Issue

  • 7C /

International Standard Book Number 13 (ISBN-13)

  • 9780791851159

Digital Object Identifier (DOI)

  • 10.1115/GT201876455

Citation Source

  • Scopus