Authors: BurkovP.V., BurkovV.P., DedeevP.O., TimofeevV.Yu.

Title of the article: The study of stress-strain state of a complex form pipeline exposed to the action of a complex load by the finite element method using AUTODESK INVENTOR software programme

Year: 2018, Issue: 4, Pages: 84-92

Branch of knowledge: Earth sciences

Index UDK: 622.691.4:053:533.6(252.6)

DOI: 10.26730/1999-4125-2018-4-84-92

Abstract: During the technical operation of pipelines, there may be accidental combinations of external influences that can lead to vibrations in technical systems. This is particularly important in oil and gas industries, as vibrations lead to heating of flammable liquids or to the possibility of ignition of gas mixtures. This article describes a numerical experiment that simulates the behavior of the fitting of the gas pumping unit subjected to the action of gravity, wind load, moment of force from the wind load as well as to the internal pressure of the pumped gas. The numerical experiment was conducted with the help of AUTODESK INVENTOR software, where the equivalent displacements from external influences and the modal frequency of the pipeline – the eigen frequency of the system were defined by the finite element method. During the numerical experiment, the boundary conditions assumed the fixation of the free edges of the pipeline, they were fixed from moving in the axial and radial directions. The simulation results suggest that with the obtained eigen frequency of the system oscillations in the given gas pipeline, no resonance effects will arise, and that the specified value of the moment of forces is so high that it can lead to pipeline deformation.

Key words: gas pipeline wind load weight load finite element method AUTODESK INVENTOR numerical experiment eigen frequency of the system stress-strain state equivalent displacements

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