Bifurcation and Postbuckling Analysis of Columns with Consideration of Pointwise Elastic-Plastic Deformation History
Plastic buckling of columns has received a great deal of attention in the past, but their deformation characteristics during postbifurcation has still not been fully understood. The historical example of a column compressed by a pair of force P at both ends is re-examined here to illustrate this fact. In the notion of von Karman , the compressive buckling would occur at a load level corresponding to reduced modulus Er.
KeywordsDeformation History Plastic Buckling Longitudinal Spreading Postbuckling Analysis Compressive Buckling
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