Abstract
This paper focuses on a new mathematical model of plastic bending of waveguide tubes with rectangular cross-section. The analysis of the known approaches and decisions is carried out, their shortcomings are shown and a new model of a thin-walled waveguide on the basis of the theory of plates and shells is offered. The solution is obtained by combining the semi-inverse Saint-Venant method and Airy functions. The received solution allows to generalize the available private solutions and have good agreement with known private empirical dependences for a plastic bending of tubes with rectangular cross-section.
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