Elastic Critical Load of Framed Columns Subjected to Different Axial Forces
- 주제(KDC) 530.4
- 발행기관 東新大學校 工業技術硏究所
- 발행년도 2004
- 총서유형 Journal
- 본문언어 영어
초록/요약
The stability analysis of a single story-2 equal bay frame with different magnitudes of column axial forces is performed by the finite element method. The columns having the same cross sections are linearly tapered along their axes. The parameters considered in the analysis are taper parameter, a for the column and for the beam, beam span to column height ratio, β, and second moment of area ratio for beam to column, γ. To examine the axial force magnitude effect on the critical loads, the magnitude of interior column axial force is assumed to be n times that of the exterior column axial force. Column bases are either hinged or fixed, and frames are classified as being unbraced or braced. To extend the limit of numerical analysis results which are valid only for the particular discrete numerical values, the changes in the critical load coefficients for n=1.0 are represented by the algebraic function of analysis parameters. The decreases in elastic critical loads due to increases in load ratio n are approximately represented in terms of values corresponding to n=1.0.
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