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A Mistuned Forced Response Analysis of an Embedded Compressor Blisk Using a Reduced-Order Model
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Kraft- och värmeteknologi.
KTH, Skolan för industriell teknik och management (ITM), Energiteknik, Kraft- och värmeteknologi.
Duke Univ, Dept Mech Engn, Durham, NC 27708 USA..
Purdue Univ, Sch Mech Engn, Zucrow Labs, Purdue, IN 47907 USA..
2019 (engelsk)Inngår i: Journal of engineering for gas turbines and power, ISSN 0742-4795, E-ISSN 1528-8919, Vol. 141, nr 3, artikkel-id 032505Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Accuracy when assessing mistuned forced response analyses is still a major concern. Since a fully coupled analysis is still very computational expensive, several simplifications and reduced-order models (ROMs) are carried out. The use of a reduction method, the assumptions and simplifications, generate different uncertainties that challenge the accuracy of 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 ROM 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. It can consider a complete family of modes to study the disk-blade modal interaction. A detailed comparison between the predicted and measured results has been performed, showing a good agreement for the high loading (HL) conditions.

sted, utgiver, år, opplag, sider
ASME , 2019. Vol. 141, nr 3, artikkel-id 032505
HSV kategori
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URN: urn:nbn:se:kth:diva-246238DOI: 10.1115/1.4041280ISI: 000459866200040Scopus ID: 2-s2.0-85055266701OAI: oai:DiVA.org:kth-246238DiVA, id: diva2:1302116
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QC 20190403

Tilgjengelig fra: 2019-04-03 Laget: 2019-04-03 Sist oppdatert: 2019-04-04bibliografisk kontrollert

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