Study The Effect Of Different Common Beam Sections Having A Constant Cross Sectional Area On The Critical Buckling Load

  • Abdul-Wahab Hassan Khuder Technical College-Baghdad
  • Sabah Khammass Hussein Technical College-Baghdad
Keywords: A simply supported beam, Critical buckling load


A simply supported beam is used to calculate the critical buckling load. A common beam
sections with constant cross sectional area are used to analyze the results using ANSYS11
program which gives a good results as comparing with the theoretical equation. The critical
buckling load depends on the shape and dimensions of beam section which has constant cross
sectional area. It observed that the critical buckling load is higher with a wide range of width
for thinner hollow rectangular-section than the thicker section and lower for ( I, T & Lsections). Changing the width or thickness for U & Z-sections gave a small effect on the
critical buckling load. Increasing the thickness of hollow circle beam section gives a
decreasing in the critical buckling load. The last beam section gives a higher critical buckling
load as comparing with solid circle section of the same cross sectional area. The same
phenomenon is found for hollow rectangular-section as comparing with the solid section