Eigenfunctions of the fluid charged elastic cylindrical capillary of final length. II. Numerical experiment

Numerical experiments intended for the check of the algorithm made by the author for calculation of natural frequencies of an elastic fluid filled cylindrical tube of final length were performed. At the end faces of the tube and on its exterior lateral surface Dirichlet uniform edge conditions were set. Working capacity of the algorithm was checked, examples of calculations are given. It is shown, that Lyav hypothesis on neglect of stress at end faces of an elastic tube in the absence of stress on a lateral surface of the tube, which length is much more than its radius, is not always valid. The degree of perturbation of natural frequencies at neglect of elastic properties of a tube was obtained.