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http://dx.doi.org/10.5050/KSNVN.2005.15.5.620

Dynamic Behavior of Rotating Cantilever Beam with Crack  

Yoon, Han-Ik (동의대학교 기계공학과)
Son, In-Soo (동의대학교 산업기술개발 연구소)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.15, no.5, 2005 , pp. 620-628 More about this Journal
Abstract
In this paper, we studied about the dynamic behavior of a cracked rotating cantilever beam. The influences of a rotating angular velocity, the crack depth and the crack position on the dynamic behavior of a cracked cantilever beam have been studied by the numerical method. The equation of motion is derived by using the Lagrange's equation. The cracked cantilever beam is modeled by the Euler-Bernoulli beam theory. The crack is assumed to be in the first mode of fracture and to be always opened during the vibrations. The lateral tip-displacement and the axial tip-deflection of a rotating cantilever beam is more sensitive to the rotating angular velocity than the depth and position of crack. Totally, as the crack depth is increased, the natural frequency of a rotating cantilever beam is decreased in the first and second mode of vibration. When the crack depth is constant, the natural frequencies of a rotating cantilever beam are proportional to the rotating angular velocity in the each direction.
Keywords
Open Crack; Rotating Cantilever Beam; Dynamic Behavior; Flexible Matrix;
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Times Cited By KSCI : 1  (Citation Analysis)
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