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Structural Engineering and Mechanics
  Volume 12, Number 3, September 2001 , pages 329-339

Slenderness ratio of telescopic cylinder-columns
Yoshihiko Suglyama and Takamitsu Ohtomo(Japan)

    The present paper deals with the effective slenderness ratio of telescopic cylinders as a long
column having different cross sections. Firstly, the slenderness ratio defined in the current standard for the
telescopic cylinders is discussed to point out some difficulties which arise when the ratio is applied to the
column having different cross sections. Secondly, a new effective slenderness ratio is proposed for columns
having different cross sections by introducing a partial effective slenderness ratio. Finally, the proposed
slenderness ratio is applied, for extending and development of discussion, to a two-staged column having
piece-wise constant cross sections and a cylindrical column having linearly varying diameters.
Key Words
    column; telescopic cylinder; buckling; slenderness ratio; partial effective slenderness ratio; cylinder-column; two-staged column.
Yoshihiko Sugiyama and Takamitsu Ohtomo, Department of Aerospace Engineering, Osaka Prefecture University, 1-1 Gakuen-chou, Sakai-shi 599-8531, Japan

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