STRESS STATE OF ORTHOTROPIC PLATE WITH CIRCULAR HOLE, PARTLY REINFORCEMENT BY A SYSTEM OF TWO ELASTIC RIBS

The stress state of infinite orthotropic plate with circular hole which contour is reinforced by a system of two centrally symmetric ribs with the same physical and geometrical characteristics. An approximate solution of singular integral equations of the problem by method of mechanical quadrature and collocation is constructed. The effect of orthotropy plate material and the external load on the distribution of stresses in the plate and reinforcing ribs is examined.