The reduction of stress concentration around the hole in an isotropic plate using composite materials

Abstract

The stress distribution around a hole in a finite isotropic plate reinforced by composite material has been calculated using a finite element analysis. The results agreed very closely with experimental investigations. With the present reinforcement technique, the stress concentration factor of 2.72 for a finite plate near a hole reduces to the factor of one. The theoretical and experimental results have shown that the present reinforced around hoop-wound carbon fiber disc provides an efficient reinforcement around circular holes. This technique could be very useful in reducing the stress concentration factor of orthotopic plates of composite materials. The technique may be found to be particularly useful in composite laminate plates in which they could be incorporated during manufacturing process.