Abstract:This paper presents a unified prediction method to the ultimate strength for rectangular stiffened plates under biaxial in-plane forces in the elasto-plastic range. For a given strain ratio in two biaxial directions, the elasto-plastic buckling strength is obtained from the elasto-plastic material behavior and the residual stresses in two directions. Then the elasto-plastic ultimate strength is predicted in terms of the imperfection sensitivity curve in the neighborhood of the particular point, where the elast… Show more
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