High accuracy postbuckling analysis of channel section struts

Buckling and post-buckling behaviour of moderately thick plates using an exact finite strip

“…Then the first obtained mode shape is used in the postbuckling phase and the Von-Karman's compatibility equation is solved exactly to obtain the general form of in-plane displacement fields. Ghannadpour and Ovesy [19][20][21] have extended their exact method for non-linear post-buckling behaviour of isotropic plates and plate structures based on CPT by taking into account a combination of the first, second and higher (if required) modes of buckling and solving the Von-Karman's compatibility equation resulted from substituting the combined deflection function, thus, the post-buckling behaviour has been investigated with high accuracy. It is noted that a proper verification study is carried out in Ref.…”