Wind and Structures

  • 제1권2호
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  • Pages.175-181
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  • 1998
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
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Role of coupled derivatives on flutter instabilities

  • Matsumoto, Masaru (Department of Global Environment Engineering, Kyoto University) ;
  • Abe, Kazuhiro (Department of Global Environment Engineering, Kyoto University)
  • 발행 : 1998.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

Torsional flutter occurs at 2D rectangular cylinders with side ratios B/D smaller than about 8 or 10. On the other hand, slender cylinders indicate the occurrence of coupled flutter, which means the coupled derivatives of slender cylinders have more significant role for flutter instability than that of bluffer ones. In this paper, based upon so called "Step-by-step analysis", it is clarified the coupled derivatives stabilize torsional flutter instability of bluffer cylinders (e.x. B/D=5), while they destabilize torsional flutter or coupled flutter instabilities of mores slender cylinders. The boundary of them exists between B/D=5 and 8.

키워드

참고문헌

  1. Matsumoto, M., Niihara, Y., Kobayashi, Y., (1994), "On mechanism of flutter phenomena for structural sections" , 40A, Journal of Structural Engineering.
  2. Matsumoto, M., Daito, Y., Yoshizumi, F., Ichikawa, Y., (1997), "Torsional flutter of bluff bodies" , Journal of Wind Engineering and Industrial Aerodynamics.
  3. Matsumoto, M. (1995), Aerodynamic damping of prisms" , Proc. lWEF.
  4. Scanlan, R.H. and Tomko, J.J. (1971), "Airfoil and bridge deck flutter derivatives" , J. ASCE EM6.
  5. Von Karman, Th. and Dann, L.G., (1949), "Aerodynamic stability of suspension bridges", F.D. Farquharson(ed.) Bull. of Univ. Washington Eng. Exp. Station, No. 116 Part 3.

피인용 문헌

  1. Frequency characteristics in various flutter instabilities of bridge girders vol.90, pp.12-15, 2002, https://doi.org/10.1016/S0167-6105(02)00314-8
  2. Practical Diagrammatical Technique for 3-DOF Bridge Flutter Analysis vol.19, pp.12, 2014, https://doi.org/10.1061/(ASCE)BE.1943-5592.0000626
  3. Effects of deck's width-to-depth ratios and turbulent flows on the aerodynamic behaviors of long-span bridges vol.6, pp.4, 2003, https://doi.org/10.12989/was.2003.6.4.263
  4. Grating effect on flutter instability vol.89, pp.14-15, 2001, https://doi.org/10.1016/S0167-6105(01)00143-X
  5. Examination of experimental errors in Scanlan derivatives of a closed-box bridge deck vol.26, pp.4, 1998, https://doi.org/10.12989/was.2018.26.4.231
  6. Aeroelastic Response of Suspended Pedestrian Bridges Made of Laminated Wood and Hemp vol.5, pp.7, 1998, https://doi.org/10.3390/infrastructures5070060