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http://dx.doi.org/10.5050/KSNVN.2006.16.9.912

Bending Vibration Analysis of Rotating Multi-blade Systems Considering the Coupling Stiffness Effect  

Lim, Ha-Seong (한양대학교 대학원 기계공학과)
Kwon, Sung-Hun (한양대학교 대학원 기계공학과)
Yoo, Hong-Hee (한양대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.16, no.9, 2006 , pp. 912-918 More about this Journal
Abstract
A modeling method for the vibration analysis of rotating multi-blade systems considering the coupling stiffness effect is presented in this paper. Blades are assumed as cantilever beams and the coupling stiffness effect originates from disc or shroud between blades. As the angular speed, hub radius ratio, and the coupling stiffness vary, the natural frequencies of the system vary. Numerical results show that the coupling stiffness is very important to estimate the natural frequencies. Along with the natural frequencies, associated mode shapes, critical angular speed, and critical hub radius ratio are obtained through the analysis.
Keywords
Bending Vibration Analysis; Multi-blade; Coupling Stiffness Effect; Cantilever Beams; Natural Frequency; Mode Shapes; Critical Angular Speed; Critical Hub Radius Ratio;
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