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Анализ колебаний надземного газопровода при ветровом резонансе

Authors: Potapov, A.N.; Tazeev, N.T.; Amirova, R.R.; Orlova, O.G.;

Анализ колебаний надземного газопровода при ветровом резонансе

Abstract

Потапов Александр Николаевич, доктор технических наук, профессор, профессор кафедры «Строительное производство и теория сооружений», Южно-Уральский государственный университет (Челябинск), potapov.alni@gmail.com. Тазеев Наиль Тимурович, аспирант кафедры «Строительное производство и теория сооружений», Южно-Уральский государственный университет (Челябинск), tazeev.nail@gmail.com. Амирова Регина Расимовна, магистрант кафедры «Строительное производство и теория сооружений», Южно-Уральский государственный университет (Челябинск), dgrayman@mail.ru. Орлова Ольга Геннадьевна, магистрант кафедры «Строительное производство и теория сооружений», Южно-Уральский государственный университет (Челябинск), helga111294@mail.ru. A.N. Potapov, potapov.alni@gmail.com N.T. Tazeev, tazeev.nail@gmail.com R.R. Amirova, dgrayman@mail.ru O.G. Orlova, helga111294@mail.ru South Ural State University, Chelyabinsk, Russian Federation Рассмотрен активный способ гашения ветровых автоколебаний модели надземного газопровода, позволяющий отстраивать систему от резонансной частоты путем изменения ее расчетной схемы. Способ заключается в установке в одном из пролетов расчетной модели устройства гашения колебаний, работающего по принципу односторонней связи (ОС). Предложена новая математическая модель колебаний с симметричной формой деформирования оси надземного газопровода. Реализация нестационарного динамического процесса выполнена в рамках теории временного анализа. Интегрирование уравнения движения проведено в матричной форме для системы с конечным числом степеней свободы и учетом внутреннего трения. На численном примере дано сравнение расчетных моделей с симметричной и кососимметричной собственной формой колебания и показана эффективность предложенного подхода с симметричной формой. The article considers an active method for damping wind self-sustained oscillations of an above-ground gas pipeline model, which allows the system to be tuned from the resonance frequen-cy by changing its design scheme. The method consists in installing an oscillation damping device in one of the spans of the design model, functioning on the principle of one-way operation. A new mathematical model of oscillations with a symmetric deformation of the axis of the above-ground gas pipeline is proposed. The non-stationary dynamic process is realized within the framework of the theory of time analysis. Integration of the motion equation is performed in matrix form for a system with a finite number of the degrees of freedom and taking into account internal friction. A numerical example is used to compare computational models with a symmetric and skewsymmetric natural mode of oscillation and show the effectiveness of the proposed approach with a symmetric shape.

Keywords

displacement, автоколебания, форма собственных колебаний, односторонняя связь, устройство гашения колебаний, матрица жесткости, one-way operation, natural mode of oscillation, oscillation damping device, above-ground gas pipeline, self-sustained oscillations, 539.3:534 [УДК 624.04], надземный газопровод, stiffness matrix, перемещение

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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