Postbuckling analysis of pultruded composite bars and simple frames

The buckling of frames and composite columns were examined using the classical lamination theory. The models established considered the bending and axial rigidities as the only parameters influencing the post-buckling response and the critical buckling load. They were formulated from the characteristics of composite materials and may be used by manufacturers for customizing material properties for specific applications. It can also be used in approximate determination of postbuckling responses.