TALEB Chems eddine
Abstract
When the structural elements are subjected to compressive load or bending moment, their webs and flanges are totally or partially in-plane compressed and they can locally buckle. Local buckling of webs and flanges can reduce their compressive and flexural strength. To avoid local buckling failure, we can limit the plate slenderness value which depends on its critical buckling stress.
A numerical buckling simulation of H profile is developed using finite elements method. This numerical model permits to calculate web buckling stress and flange buckling stress, according to the boundary conditions of these plates. The numerical results will be used to propose a classification of rolled profiles. The proposed classification will be compared to that made according to the steel design codes. Some profiles will improve their classification about the local buckling, and will permit to use better resistance.
Keywords
Buckling of plates, Theory of thin plates, Finite element method, Numerical programs.
