Analytical Investigation on Ultimate Strength of Tubular Steel Stub-Columuns

摘要

The ultimate stability strength of tubular steel stub-columuns under compression and bending are investigated using the non-linear finite element approach developed for determination of the ultimate strength of shell-type-plate. In the analysis, the effects of residual stress and initial geometric imperfection are included. The boundary conditions along the loaded edges are simple support. The analytical results obtained by this method are compared with the analytical values based on other numerical method and the experimental values. A parametric study was conducted to evaluate the effects of length-diameter ratio, slenderness parameter, residual stress, initial geometric imperfection and stress inclination on the ultimate strength of tubular steel stub-columuns.