A novel discrete coordinate approach to modelling nonlinear structural instability problems with material damage

A novel analytical framework for the inclusion of active damaging processes in a structural stability analysis is presented. The considers quasi-static deformation and formulated terms discrete coordinate approach, employing an extended total potential energy functional, where current damage state expressed geometric configuration applied loading. Within framework, efficient structures prone to buckling instability material enabled particularly initiates once has been triggered. Composite panels with multiple mechanisms (e.g. delaminations, matrix cracks) are studied showcase its application.