• 제목/요약/키워드: Subtangential Coefficient

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경사종동력을 받는 T형상 크랙 보의 안정성 해석 (Stability Analysis of Cracked Cantilever T-beams Subjected to Subtangential Follower Force)

  • 손익수;조정래
    • 한국기계가공학회지
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    • 제9권3호
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    • pp.49-55
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    • 2010
  • In this paper, the stability of cracked cantilever T-beams subjected to subtangential follower force is investigated. Also, the effect of subtangential coefficient and crack on the natural frequency of T-beams is presented. Based on the Euler-Bernoulli beam theory, the equation of motion is derived by the energy expressions using extended Hamilton's Principle. The crack is assumed to be in the first mode of fracture and to be always opened during the vibrations. The values of critical follower force and the stability maps of cantilever T-beams are obtained according to the subtangential coefficient and crack severity. The results of this study will contribute to the safety testing and the stability estimation of cracked T-beams subjected to follower force.

경사 종동력을 받는 티모센코 보의 안정성에 미치는 크랙의 영향 (Effects of Crack on Stability of Timoshenko Beams Subjected to Subtangential Follower Force)

  • 손인수;윤한익
    • 한국소음진동공학회논문집
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    • 제18권12호
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    • pp.1327-1334
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    • 2008
  • In this paper, the purpose is to investigate the stability of cracked Timoshenko cantilever beams subjected to subtangential follower force. In addition, an analysis of the instability(critical follower force of flutter and divergence) of a cracked beam as slenderness ratio and subtangential coefficient is investigated. The governing differential equations of a Timoshenko beam subjected to an end tangential follower force is derived via Hamilton's principle. The crack is assumed to be in the first mode of fracture and to be always opened during the vibrations. The results of this study will contribute to the safety test and stability estimation of structures of a cracked beam subjected to subtangential follower force.