Stress Concentration around a Circular or Elliptical Cutout, or Two Circular Ones in a Cylindrical Shell

Abstract

The stress distribution around a circular or elliptical cutout, or two circular ones in a thin cylindrical shell is investigated under axial load, torsion or internal pressure. The analysis is based on the shallow shell theory. General solutions of the Donnell-type equations are superposed, and then the boundary condition on the free edge and the single-valued displacement condition are satisfied by a collocation procedure. The result covers wider ranges of curvature parameterβand distance between two cutouts than previous researches. Systematical investigation is done on the influence of parameter variation on stress concentration.