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Title: Spatial natural vibrations of viscoelastic axisymmetric structures // Magazine of Civil Engineering. – 2020. – № 4 (96). — С. 118-128
Creators: Mirsaidov M. M.; Khudainazarov Sh. O.
Imprint: 2020
Collection: Общая коллекция
Subjects: Техника; Сопротивление материалов; axisymmetric structures; viscoelastic structures; spatial fluctuations; natural oscillation frequency; high-rise chimneys; fluctuation decrement; dynamic characteristics; осесимметричные структуры; вязкоупругие структуры; пространственные колебания; собственная частота колебаний; высотные дымовые трубы; дымовые трубы; динамические характеристики
UDC: 539.3/6
LBC: 30.121
Document type: Article, report
File type: PDF
Language: English
DOI: 10.18720/MCE.96.10
Rights: Свободный доступ из сети Интернет (чтение, печать, копирование)
Record key: RU\SPSTU\edoc\66021

Allowed Actions: Read Download (0.9 Mb)

Group: Anonymous

Network: Internet

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A mathematical model, methods and algorithm to assess the spatial natural vibrations of axisymmetric structures are given in the paper taking into account the variability of the slope and structure thickness in the framework of the viscoelastic theory of shells. Dissipative properties of the material are taken into account by the Boltzmann-Volterra hereditary theory of viscoelasticity. The spatial natural vibrations of high-rise ventilation pipes of the Armenian nuclear power plant (NPP) and smokestacks of the Novo-Angren, Syrdarya, Azerbaijan and Ekibastuz thermal power plants (TPP) were studied taking into account the elastic and viscoelastic properties of their material. The reliability of results was verified by comparing the results obtained with the exact solution of a number of test problems, as well as by comparing the results with the results of field experiments. It was found that when the viscoelastic properties of structure material are taken into account, the decrement of their vibrations weakly depends on the values of eigenfrequency. Along with this, the dangerous range of earthquake frequencies includes not only the bending frequencies of the structure, but the spatial ones as well.

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Table of Contents

  • Spatial natural vibrations of viscoelastic axisymmetric structures
    • 1. Introduction
    • 2. Methods
    • 3. Results and Discussion
      • 3.1. Study of the method and algorithm convergence when solving model problems
      • 3.2. Study of spatial natural vibrations of high stacks taking into account elastic properties of the material
      • 3.3. Study of spatial own vibrations of high-rise stacks taking into account viscoelastic properties of the material
    • 4. Conclusions

Included in

Magazine of Civil Engineering / Санкт-Петербургский политехнический университет Петра Великого. — Санкт-Петербург: СПбПУ, 2020-. — Периодичность: 8 раз в год. — Выходит с 2020 г. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — Электрон. журнал. — Текст: электронный

Magazine of Civil Engineering / Санкт-Петербургский политехнический университет Петра Великого. — Санкт-Петербург: СПбПУ, 2020-. № 4 (96), 2020. — 1 файл (15,8 Мб). — Свободный доступ из сети Интернет (чтение, печать, копирование). — Электрон. журнал. — <URL:http://elib.spbstu.ru/dl/2/j21-157.pdf>.

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