“…In subsequent papers general questions of the stability of pipe systems conveying fluid were studied [6,7], together with the dependancy of the peculiarities of pipe vibrations on boundary conditions [8,9]; the publishing of records of continuously changing fluid pressure and flow velocity [10,11]; the development of more accurate theory of beams [12,13]; the influence of tension, damping and attached mass at the lower end of a vertical pipe [14,15] the effect of an elastic support in an intermediate cross-section [16,17] and the evaluation of elastic foundations [18], torsional stiffness of clamping [19] and other factors [20][21][22].…”