Abstract
In this paper, we solve the problem of free bending vibrations of a thin-walled gas pipeline of large diameter laid above the ground on supports. The gas pipeline is considered as a cylindrical shell subject to the action of a stationary internal working pressure, the parameter of the longitudinal compressive force. The frequencies of free oscillations and the influence of parameters on the gas pipeline are compared with different versions of the supports.
Highlights
Pipeline transportation is an important component of the fuel and energy complex of the Russian Federation, it has a length of tens of thousands of kilometers from the point of production to consumers
The internal operating pressure, the longitudinal compressive force parameter and the length between the fastenings significantly influence the natural frequencies of the free oscillations of the pipeline, this effect is most noticeable for hinged pipelines;
An increase in the longitudinal compressive force parameter has a lesser effect on rigidly fixed pipelines (6% reduction);
Summary
Pipeline transportation is an important component of the fuel and energy complex of the Russian Federation, it has a length of tens of thousands of kilometers from the point of production to consumers. Many projects are currently being implemented to build ne w and upgrade existing pipelines. They are made of modern thin -walled pipes with a diameter of more than 1000 mm. Climatic and geological conditions, there are different types of technological solutions when laying pipelines, for e xample, they distinguish: underwater, above-ground, above-ground, underground, and semi-subterranean [2]. For each type of gasket there are specific features of calculation and collection of loads, accounted for during operation
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