Stress analysis of perforated composite plates

Abstract

Thin-walled plates and panels of various constructions find wide use as primary structural elements in simple and complex configuration.<br><br>In aerospace structures, panels with variously shaped cutout are often used. The understandingof the effects of cutout on the load<br><br>bearing capacity and stress concentration of such plates is very important in designing of complex structures. An analytical investigation<br><br>is used to study the stress analysis of plates with different central cutout. Particular emphasis is placed on flat square plates subjected to a<br><br>uni-axial tension load. The results based on analytical solution are compared with the results obtained usingfinite element methods. The<br><br>main objective of this study is to demonstrate the accuracy and simplicity of presented analytical solution for stress analysis of composite<br><br>plates with central cutout. The effect of cutout geometry (circular, square, or special cutouts), material properties (isotropic and orthotropic),<br><br>fiber angles, and cutout curvature are considered. The results presented herein, indicated that the presented method can be used<br><br>to determine accurately the stresses and stress concentration in composite plates with special shape cutouts.