Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Buckling Analysis of Inelastic Steel Members

비탄성 강재 부재의 좌굴 해석

  • Received : 1999.09.04
  • Published : 2000.02.27
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Abstract

In this study, the computationally efficient inelastic buckling analysis program is developed to be used as the research tool in finding buckling strength of inelastic members. The program can determine buckling loads and buckled shapes of elastic and inelastic members which failed by flexural, lateral-torsional and/or local buckling. It can analyze singly and doubly symmetric I-shape members. In the program, the web of the member is modeled using the plate element and the flanges are modeled by beam elements. Multilinear isotropic hardening rule and the incremental theory of plasticity are used to simulate the inelastic stress-strain relationship from material tests. The program is verified using theoretical solutions and experimental results. The results from the program show good agreement with those from experiments and theory.

본 연구에서는 비탄성 부재들의 좌굴 강도를 결정하기 위한 계산적으로 효율적인 비탄성 좌굴해석 프로그램이 개발되었다. 본 프로그램은 휨 좌굴, 휨-비틂 좌굴 혹은 국부좌굴에 의해 붕괴되는 탄성과 비탄성 부재들의 좌굴 강도 및 형상을 결정할 수 있다. 일축 대칭이나 2축 대칭인 I 형 부재를 해석할 수 있다. 복부판은 판 요소를 이용하여 모델되고, 플랜지는 보 요소로 모델되었다. 재료의 비탄성 응력-변형률 관계를 모사하기 위하여 다선형 등방경화 법칙과 증분이론이 사용되었다. 프로그램은 이론치와 실험값들을 이용하여 입증되었다. 프로그램의 결과는 이론치 및 실험값들과 잘 일치였다.

Keywords

References

  1. International Journal for Numerical Methods in Engineering v.3 Analysis of Thick and Thin Shell Structures by Curved Finite Elements Ahmad, S.;Irons, B.M.;Zienkiwicz, O.C.
  2. ASCE, Journal of Structural Divisioin, ST. v.9 Lateral and Local Buckling of Beams and Frames Akay, H.U.;Johnson, P.;Will, K.M.
  3. The Lateral Instability of Continuous Steel Beams Bansal, J.P.
  4. International Journal of Numerical Methods in Engineering v.2 Finite Element Analysis of Torsional and Torsional-Flexural Stability Problems Barsoum, R.S.;Gallagher, R.H.
  5. Journal of Constructional Steel Research v.23 Lateral-Distorsional Buckling of Steel I-Section Members Bradford, M.A.
  6. Compputers & Structues v.26 no.5 Numerical Techniques or Plasticity Compuatations in Finite Element Analysis Dodds, R.H.
  7. Computers and Structures v.19 no.3 Inelastic Interactive Distorsional Buckling of W-Shape Steel Beams EI-Ghazaly, H.A.;Sherbourne, A.N.;Dubey, R.N.
  8. ASCE, Journal of Engineering Mechanics Division v.85 Columns Uner Combined Bending and Thrust Galambos, T.V.;Ketter, R.L.
  9. International Journal for Numerical Methods in Engineering v.12 On a Numerical Solution of the Plastic Buckling Problem of Structures Gupta, K.K.
  10. Dynamics of Structures Humar, J.L.
  11. An Evaluation of Four Hardening Rules of the Incremental Theory of Plasticity Hunsaker, B.
  12. ASCE, Journal of Engineering Mechanics Division v.92 no.EM2 Stability of Plates Using the Finite Element Method Kapur, K.K.;Hartz, B.J.
  13. Finite Elements in Plasticity: Theory and Practice Owen, D.R.J.;Hinton, E.
  14. ASCE, Journal of the Structural Division v.96 no.ST9 Elastic Lateral Buckling of Steel Beams Powel. G.M.;Klingner, R.
  15. Journal of Aeronautical Science v.13 no.5 The Colunm Paradox Shanley, F.R.
  16. Theory of Elastic Stability Timoshenko, S.P.;Gere, J.M.
  17. WATCOM FORTRAN $77^{32}$ User's Guide
  18. ASCE. Journal of the Structural Division v.89 no.ST5 Inelasitc Lateral Buckling of Beams Galambos, T.V.
  19. Behavior of Webs of Rolled Sections under In-plane Compressive Edge Loads Elgaaly, M.;Salkar, R.