Flexão Inercial De Uma Guia De Ondas Com Paredes Finas De Secção Transversal Retangular: Flexão Da Parede Lateral Em Seu Plano

Based on the theory of plates and shells a method of modeling thin-walled beams is proposed. Using the tenets of the theory of plates and shells Papkovich–Neuber solution as well as the Saint Venant semiinverse method partial analytical solution of a system of nonlinear partial differential equations is applied to calculate inertial stress action on the deflected mode of lateral plates of thin-walled straight parts of waveguides with a rectangular cross-section. The novelty of this article is in the fact that the conducted research proved the cause of the behavior of a waveguide with rectangular cross-section. To achieve the desired results calculation methods were used based on the works of Vlasov Bychkov and Rzhanitsyn. The obtained results showed the correctness of this technique and revealed the necessity to specify the Zhuravsky formula when calculating shear stresses in thin-walled beams by Euler–Bernoulli beam theory.