Contact problem for step-homogeneous infinite plate with finite stringers

A problem for step-homogeneous infinite plate with two infinite stringers has been considered. The plate is made of two different half-infinite parts. The stringers are normally situated on different parts of the plate from boundary of separation. The edge of one stringer is on the boundary of separation. The plate is deformed under tangential forces acting at the edges of the stringers. By means of factorization and orthogonal polynoms method the problem is reduced to the solution of quazy-regular infinite system of algebraic equations.