Torsion of circular anisotropic beam with two linear cracks, weakened with a circular cavity

Various components made of anisotropic materials (plast-mass, glass material, etc.) have been
widely used in the production of modern mechanisms and machinery. Precise calculation
of these elements, constituting the design, holds great importance. In general, fracture and
distribution are essential issues in safety calculations. In this study, torsion of a beam with
an S oblast having outer and inner constraints as L2 and L1 circles with R2 and R1 radii,
respectively, is investigated.