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Mode and transient response localization occurred in rotating multi-packet blade systems due to random mistuning

Title
Mode and transient response localization occurred in rotating multi-packet blade systems due to random mistuning
Author
유홍희
Keywords
Multi-packet blade system; Random mistuning; Mode localization; Transient response localization
Issue Date
2015-10
Publisher
KOREAN SOC PRECISION ENG
Citation
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, v. 16, NO 10, Page. 2063-2071
Abstract
In a multi-packet blade system, random mistuning always exists among blades due to several reasons such as manufacturing tolerance, material irregularity and operation wear. It is well known that mistuning in a periodic structure often results in vibration phenomena such as mode and transient response localization. In this paper, a structural dynamic model of a randomly mistuned rotating multi-packet blade system subjected to cyclic nozzle forces is proposed. The accuracy of the proposed model is first validated by comparing its numerical results to those obtained with a finite element model. Then, using the proposed model, the relation between mode and transient response localization is investigated and a design guideline for multi-packet blade systems subjected to cyclic nozzle forces is suggested.
URI
https://link.springer.com/article/10.1007%2Fs12541-015-0268-xhttp://hdl.handle.net/20.500.11754/28350
ISSN
2234-7593; 2005-4602
DOI
10.1007/s12541-015-0268-x
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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