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http://dx.doi.org/10.5050/KSNVN.2009.19.12.1244

Modal Analysis of a Rotating Packet Blade System having a Crack  

Kwon, Seung-Min (한양대학교 대학원 기계공학과)
Yoo, Hong-Hee (한양대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.19, no.12, 2009 , pp. 1244-1251 More about this Journal
Abstract
In this paper the vibrational behavior of a multi-packet blade system having a cracked blade is investigated. Each blade is assumed as a slender cantilever beam. The coupling stiffness effect that originates from either disc flexibility or shroud is considered in the modeling. Hybrid deformation variables are employed to derive the equations of motion. The flexibility due to crack, which is assumed to be open during the vibration, is calculated basing on a fracture mechanics theory. In the paper, the results of the change in modal parameters due to crack appearance are presented. The influence of the crack parameters, especially of the changing location of the crack is examined.
Keywords
Modal Analysis; Multi-packet Blade System; Open Crack; Stress Intensity Factor; Natural Frequency; Disc; Coupling Stiffness Effect; Cantilever Beam; Shroud;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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