“…This solution is analytical and presented in the form of two trigonometric series with unknown coefficients, and can be used to satisfy not only force boundary conditions but also kinematic and mixed ones. It should note that analytical approches becomes popular in various scientific [12,13,14,15] and engineering [16,17,18,19,20] domains of investigation due to the wide spread of the systems of analytical calculations (Maple, Mathematica etc.) in modelling processes and structures.…”