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Journal of the Korea Institute of Military Science and Technology 2003;6(4):100-112.
Transient Response Analysis of Rotating Blade Considering Friction Damping Effect of Elastically Restrained Root in Resonant Frequency Range
공진 주파수 영역에서 탄성지지단의 마찰감쇠효과를 고려한 회전 블레이드의 과도응답해석
윤경재
국방과학연구소
Abstract
This paper presents the transient response analysis of a rotating blade in resonant frequency range. It is shown that the modeling is considered in elastic foundation and friction damping effect. The equations of motion are derived and transformed into a dimensionless form to investigate general phenomena. Numerical results show that the magnitude of friction damping to reduce maximum transient response in near the critical angular speed. The method can be applied to a number of examples of the practical rotating blade system to minimize transient response in resonant frequency range.
Key Words: Rotating Cantilever Beam, Transient Response, Resonant Frequency, Hub Radius Ratio, Elastic Foundation Effect, Friction Damping Effect


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