Post-Buckling of Shear Deformable Uniform Columns Under a Combined Load

조합하중을 받는 전단변형 기둥의 좌굴 후 거동 해석

  • Received : 2003.03.03
  • Accepted : 2003.06.05
  • Published : 2003.06.27

Abstract

The governing equation of the post-buckling of shear-deformable uniform columns under a combined load consisting of a uniformly distributed axial load and a concentrated load at a free end was derived and the post-buckling analysis was investigated by using differential transformation. The loads were obtained for various end-slopes. The results obtained by the present method agree well with published results. In this paper, the differential transformation method was illustrated through its application to the non-linear differential equation of the post-buckling. It is expected that applications of the method to more challenging problems will are expected follow in future to ensue.

본 연구는 등분포 축하중과 자유단의 집중하중으로 구성된 조합하중을 받는 등단면 기둥을 대상으로 휨과 전단변형을 고려한 비선형 미분 방정식을 유도하고, 미분 변환을 적용한 수치해석을 실시하여 좌굴 하중을 구하고 좌굴 후 거동 해석을 수행하였다. 자유단의 여러가지 기울기에 따른 좌굴하중을 구하였으며, 미분 변환으로 얻어진 본 연구의 결과는 기존의 연구 결과와 양호한 대응을 나타냈다. 본 연구를 통하여 미분 변환법이 좌굴 후 거동 해석과 같은 비선형 미분방정식의 해법에 적용될 수 있음을 확인하였고, 향후 좀 더 복잡하고 다양한 문제에도 응용될 수 있을 것으로 기대된다.

Keywords

References

  1. Applied Mathematics and Computation v.79 Application of Differentional Transformation to Eigenvalue Problems Chen Chao-Kuang;Ho Shing Huei https://doi.org/10.1016/0096-3003(95)00253-7
  2. Mathematica Version 4.2 For Microsoft Windows Wolfram Research Inc.
  3. International Journal of Non-Linear Mechanics v.36 Post-buckling of uniform cantilever column under a combined load Lee Kyungwoo https://doi.org/10.1016/S0020-7462(00)00047-0
  4. Journal of the Korean Society of Noise and Vibration Engineering v.12 no.5 Post-buckling of Non-uniform Cantilever Column Subjected to a Combined Load Shin Y.oung-Jae;Chiba M. https://doi.org/10.5050/KSNVN.2002.12.5.323
  5. Theory of Elastic Stability Timoshenko S. P.;Gere, J. M.
  6. Engng. Fract. Mechanic. Post-buckling of uniform cantilever column-Galerkin finite element solution Venkateswara Rao G.;Raju P. C.
  7. Differentional Transformation and Its Applications for Electrical Circuits Zhou J. K.