Investigation of frequency responses of a sandwich beam on the base of viscous model of damping

Authors

  • S. A. Vorob'ev Educational Establishment «Belarusian State University of Transport»; 246653, Belarus, Gomel, Kirova str., 34

Keywords:

Abstract

Equations of motion of a sandwich elastic beam with taking into account internal damping in materials of layers on the base of Voigt model are given. Methods of Fourier and complex amplitudes are used in analysis of free and stationary forced vibrations. Spectrums of fundamental frequencies of ideal and damped sandwich beams were examined, comparative analysis was given. Amplitude and phase-frequency responses were obtained. Conclusion about incorrectness of viscous model of damping in the problem of investigation of free and forced vibrations of a sandwich beam was done.

Author Biography

S. A. Vorob'ev, Educational Establishment «Belarusian State University of Transport»; 246653, Belarus, Gomel, Kirova str., 34

PhD in Physical and Mathematical Sciences

References

Кочнева Л.Ф. Внутренне трение в твердых телах при колебаниях. – М.: Наука, 1979. – 96 с.

Нашиф А, Джоунс Д., Хендерсон Дж. Демпфирование колебаний. – М: Мир, 1988. – 448 с.

Воробьев С.А. Исследование спектра частот собственных колебаний трехслойного стержня на основе различных моделей // Материалы IX Международного симпозиума «Динамические и технологические проблемы механики конструкций и сплошных сред». – М.: МАИ, 2003. – С. 183–190.

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Published

2006-09-25

How to Cite

Vorob’ev, S. A. (2006) “Investigation of frequency responses of a sandwich beam on the base of viscous model of damping”, Chrezvychaynye situatsii: obrazovanie i nauka, 1(1), pp. 74–80. Available at: https://journals.ucp.by/index.php/gei/article/view/652 (Accessed: 21 October 2021).