Open AccessThe influence of flowing fluid on the vibration of the pipeline
Author(s) -
A.L. Melkonaian,
AUTHOR_ID,
М.В. Чуклин,
AUTHOR_ID
Publication year - 2021
Publication title -
trudy krylovskogo gosudarstvennogo naučnogo centra
Language(s) - English
Resource type - Journals
eISSN - 2618-8244
pISSN - 2542-2324
DOI - 10.24937/2542-2324-2021-1-s-i-144-146
Subject(s) - pipeline (software) , inertia , vibration , inertial frame of reference , displacement (psychology) , convergence (economics) , stiffness , finite element method , process (computing) , fictitious force , cross section (physics) , constant (computer programming) , amplitude , structural engineering , mechanics , control theory (sociology) , mathematics , computer science , engineering , acoustics , physics , mechanical engineering , classical mechanics , psychology , control (management) , quantum mechanics , artificial intelligence , economics , psychotherapist , economic growth , operating system , programming language
To analyze vibration parameters of the pipeline (displacement amplitudes, internal forces, and support reactions) the model, algorithm, and program were created. The model is a quasi-one-dimensional (quasi-1D) finite element system. The calculation algorithm is based on the discrete version of the partial responses method. Formulas for partial responses and partial parameters necessary for the implementation of the proposed algorithm were derived. The influence of the flowing liquid is compensated by applying an additional inertial load, which, in turn, is taken into account by correcting and modifying the inertia-stiffness characteristics of the pipeline model. The problem of the vibration of a straight pipeline of a constant cross-section with two points of support is given as an example. The influence of inertial load components on vibration parameters, own frequency values, and the critical velocity of the liquid were studied. The convergence of the process in case of using method of successive approximations was estimated.