Reduction of the stress concentration factor in a homogeneous panel with hole by using a functionally graded layer

摘要: This work aims at understanding the effect of a radially heterogeneous layer around hole in homogeneous plate on stress concentration factor. The problem concerns single under different far-field in-plane loading conditions. By assuming radial power law variation Young's modulus and constant value for Poisson's ratio, governing differential equations plane conditions, general conditions are studied. elastic solutions obtained closed form and, order to describe localized interface damage between ring plate, two (perfectly bonded frictionless contact) formulae factors explicitly given uniaxial, biaxial shear comparisons with hoop values performed. investigated understand role played by geometric graded constitutive parameters. results validated numerical finite element simulations which some simplified hypotheses assumed analytical model, relaxed explore range validity solution presented. In this way useful tailoring parameters specific applications.