Effect of boundary conditions on the elastic buckling of uniaxially loaded plates with circular hole

Thin-Walled structural components are widely used in different applications such as aerospace, pressure vessel, mechanical and civil Engineering. Since they are usually specified by small thickness, the safety assessment of these structural components requires to consider all the phenomena which can decreas the bearing capacity of such elements. Among them, the presence of notch and holes in thin-walled structure can extremely affects their safety factor with respect to the different mode of failure like buckling. For the plates that characterized by a high slenderness, buckling collapse can occur under compression, shear, or even under tension. In this study the finite element method has been employed to determine the elastic buckling axially loaded perforated rectangular plate with different boundary conditions. The considered perforation is a single circular hole whose center is located at the center of plate and also around it within a specific radius. Different plate aspect ratios, have been chosen to assess the effect of aspect ratio on the plate buckling load. The study shows that the buckling of perforated rectangular plate significantly is affected by the boundary conditions. It also shows that for all boundary conditions the buckling coefficient doesn’t change significantly for the aspect ratio of more than 4.

Keywords:

Buckling , Perforated rectangular plates , boundary conditions , FEM