Imperfection sensitivity of thin plates loaded in shear


  • Franc Sinur
  • Primoz Moze
  • Klemen Rejec
  • Gasper Luzar
  • Darko Beg


plate buckling, worst initial imperfections, longitudinal stiffeners, GMNIA, sensitivity analysis


The paper deals with imperfection sensitivity analysis of longitudinally stiffened thin plates loaded in shear. The aim of this paper is to demonstrate the use of optimization method for direct determination of the worst imperfection shape. New linear constraints are considered in optimization method in order to find not only the worst but also realistic imperfection shape. Further on, different solutions of arbitrary shapes that are used to estimate the worst imperfection are introduced and compared. Finally, a parametric analysis seeking the worst imperfection shape is performed and discussed.


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