Detachment of inhomogeneous coating

This paper describes a study of buckling and supercritical behavior of inhomogeneous coatings. On the basis of the variational interpretation of the problem and the Ritz method, the change in the first critical value of the load at which buckling occurs, depending on the problem parameters. Calculations are carried out for inhomogeneous coating of two types: coatings with piecewise constant stiffness and coatings with a continuously changing maximum inside and outside the detachment zone. The supercritical behavior of the coating is studied.