Asymptotic Solution for Post-Buckling of a Circular Delamination with Non-Linear Fiber Bridging in 3D Orthotropic Materials

摘要

This article presents an asymptotic iteration solution for non-linear buckling of a circular delamination in orthotropic materials. Fiber bridging is characterized by a lateral restoring traction with an assumed form of quadratic function of deflection. For the first iteration, an analytic solution for linear buckling of circular delamination is derived. Further iteration results in non-linear characteristic relations between the post-buckling load and the central deflection, to evaluate the effect of the fiber bridging factors and orthotropic parameter on the post-buckling behavior. Results show that fiber bridging raises the post-buckling load of orthotropic structures and improves its resistance to delamination.