In the monograph, on the basis of the operator form of the homogeneous solutions method, Saint-Venant's solutions for the cylinder, naturally twisted rod, screw spring, circular ring and cylinder with screw anisotropy are constructed. The listed group of bodies is united by the concept of . For any pseudo-cylinder, it is shown that the Saint-Wenan solution is a linear combination of twelve elementary homogeneous solutions, which in the monograph are called the elementary solutions of Saint-Wenan .. The construction of these solutions is reduced to two-dimensional problems at the cross section . Analytical and numerical methods for integrating these tasks have been developed. The theory is illustrated by specific examples. For professionals in the field of elasticity theory, graduate students and students specializing in this field.