On calculating the reliability of thin-walled cylindrical shells located in a turbulent liquid or gas flow under random actions
Authors: Starodubtseva S.A., Zinchenko L.V., Sakharov A.A.
Published in issue: #8(164)/2025
Category: Mechanics | Chapter: Mechanics of Deformable Solid Body
The paper considers thin-walled cylindrical shells in turbulent liquid or gas flows under the axisymmetric external or internal spatio-temporal random pressure field. For such shells, the paper determines random fields of the normal displacements, stresses and curvature alterations. The main objective is to identify probabilities of the events that the shell parameters (displacements, stresses and curvature) would never exceed their standard values over the entire length, and the given time interval of the system operation. The paper uses the basic concepts and statistical dynamics methods of the mechanical systems, including impedance, transfer function, Green's function, correlation function, energy spectrum of the random fields and processes, etc. Relatively simple solutions are obtained by the Green's function method for the inertialess shells loaded with a random stationary pressure field distributed along its length and presented in a quasi-harmonic form with the random amplitudes and frequencies. Efficient solutions to the stated dynamic problems are also obtained by expanding them in terms of the proper axisymmetric modes of the shell oscillation, as well as for the case, where the pressure field could be represented by the spatio-temporal two-dimensional white noise. The paper shows a fundamental possibility of obtaining an exact solution to the stated problems for the general case of loading, when pressure on the shell could be represented as a generalized two-dimensional Fourier transform in coordinates and time.
EDN YNFSLY
References
[1] Bolotin V.V. Vibratsii v tekhnike: Spravochnik: v 6 t. T. 1. Kolebaniya lineynykh sistem [Oscillations in engineering: Handbook: in 6 volumes. Vol. 1. Oscillations of the linear systems]. Moscow, Mashinostroenie Publ., 1999, 504 p.
[2] Bolotin V.V. Sluchaynye kolebaniya uprugikh sistem [Random oscillations of the elastic systems]. Moscow, Nauka Publ., 1979, 335 p.
[3] Gusev A.S. Veroyatnostnye metody v mekhanike mashin i konstruktsiy [Probabilistic methods in mechanics of machines and structures]. Moscow, BMSTU Publ., 2009, 225 p.
[4] Gusev A.S. Kurs lektsiy po veroyatnostnym metodam v mekhanike [Lecture course on probabilistic methods in mechanics]. Moscow, BMSTU Publ., 2020, 102 p.
[5] Gusev A.S., Karunin A.L., Kramskoy N.A., Starodubtseva S.A. Nadezhnost mekhanicheskikh sistem i konstruktsiy pri sluchaynykh vozdeystviyakh [Reliability of mechanical systems and structures under random impacts]. Moscow, MAMI Publ., 2001, 284 p.
[6] Grandall S. H. Random Vibration. Cambridge, Technology Press, 1963.
[7] Okopny Yu.A., Radin V.P., Chirkov V.P. Kolebaniya lineynykh sistem [Oscillations of the linear systems]. Moscow, Spektr Publ., 2014, 432 p.
[8] Tikhonov V.I., Mironov M.A. Markovskie protsessy [Markov processes]. Moscow, Sovetskoe Radio Publ., 1977, 488 p.
[9] Gusev A.S., Karunin A.L., Kramskoy N.A., Starodubtseva S.A., Shcherbakov V.I. Teoriya kolebaniy v avtomobile- i traktorostroenii [Theory of oscillations in the automobile and tractor manufacturing]. Moscow, MGTU “MAMI” Publ., 2007, 336 p.
[10] Gusev A.S., Naydenov S.O. Analiz traektoriy nedifferentsiruemykh sluchaynykh protsessov [Analysis of trajectories of non-differentiable random processes]. Izvestia vuzov. Mashinostroyenie — BMSTU Journal of Mechanical Engineering, 2014, no. 9, pp. 3–8.
[11] Roberts J.B., Spanos P.D. Random vibration and statistical linearization. New York, John Willey, 1990, 407 p.
[12] Chirkov V.P. Voprosy nadezhnosti mekhanicheskikh sistem [Reliability issues of the mechanical systems]. Moscow, Znanie Publ., 1981, 54 p.
[13] Makhutov N.A. Kriterialnaya baza prochnosti, resursa, nadezhnosti, zhivuchesti mashin i cheloveko-mashinnykh kompleksov [Criterion base of strength, resource, reliability, survivability and safety of machines and man-machine complexes]. Problemy mashinostroeniya i nadezhnosti mashin — Journal of Machinery Manufacture and Reliability, 2013, no. 5, pp. 25–36.
[14] Nikolaenko N.A. Veryatnostnye metody dinamicheskogo rascheta mashinostroitelnykh konstruktsiy [Probabilistic methods of dynamic computation of the mechanical engineering structures]. Moscow, Mashinostroenie Publ., 1967, 367 p.
[15] Kolesnikov K.S. Dinamika raket [Dynamics of rockets]. Moscow, Mashinostroenie Publ., 1980, 376 p.
[16] Gusev A.S., Scherbakov V.I., Chukanin Y.P., Starodubtseva S.A. Metod statisticheskoy linearizatsii v dinamike nelineynykh sistem mobilnykh mashin [Method of statistical linearization of nonlinear dynamics in system of mobile machines]. Izvestiya MGTU MAMI, 2014, vol. 1, no. 19, pp. 84–86.
[17] Panovko Ya.G., Gubanova I.I. Ustoychivost i kolebaniya uprugikh sistem. Sovremennye kontseptsii, paradoksy i oshibki [Stability and oscillations of the elastic systems. Modern concepts, paradoxes and errors]. 7th ed. Moscow, Lenand Publ., 2015, 350 p.