Deformation of bi-material plane with elliptic hole

The plane problem (plane strain or plane stress) for bi-material plane with elliptic hole is considered. The hole is located entirely in lower half-plane. On the boundary of the hole external load is applied. Stresses and angles of rotation at infinity are given. The method of complex potentials of Kolosov-Muskhelishvili and method of superposition is used for the solution of the problem.