It is important to note that the influence of residual stresses
was neglected during evaluation. From the differentiation of curves of normative buckling resistance a,b,c,d of standard EC3[25], the curves differ most for λ=0.83,if the influence of residual stresses is taken into consideration. A more elaborate description of the influence of this structural imperfection would require utilization of thin-walled finite elements to model the strut, and the evaluation of the load-carrying capacity applying the geometric non-linear solution; however, it is practically impossible in connection with the numerically demanding evaluation of Sobol’s sensitivity indices.
请高手帮忙翻译下 谢谢!!