Shape Optimization to Reduce Stress Concentrations of Jointed Bodies

Abstract

This paper proposes a shape optimization method to reduce stress concentration of jointed bodies by paying attention to stress singularities at the ends of bonded interface. The shape geometry is expressed by the Bezier function and is optimized using the sequential linear programming. The effectiveness of the proposed shape optimization method is demonstrated through a numerical example of single-lap joint. Results can provide much information for optimum design of single-lap joint.