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Название:
Dynamic instabilities of a seismically excited shell with shaker-shell interaction modeling
Коллекция:
Международные конференции » Нелинейная динамика
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Вид документа:
статья
Язык документа:
английский
Добавлен в архив:
03.12.2013
Сводная информация по документу:
Dynamic instabilities of a seismically excited shell with shaker-shell interaction modeling [Текст] / Pellicano F. // Международные конференции : Нелинейная динамика - НТУ "ХПИ", 2010.
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The present paper is focused on the experimental and theoretical analysis of circular cylindrical shells under seismic excitation. The shell axis is vertical, it is clamped at the base and connected to a rigid body on the top; the base provides a vertical seismic excitation. The goal is to investigate the shell response when a resonant forcing is applied: the first axisymmetric mode is excited around the resonance at relatively low frequency and low amplitude of excitation. A violent resonant phenomenon is experimentally observed as well as an interesting saturation phenomenon close to the previously mentioned resonance. A theoretical model is developed to reproduce the experimental evidence and provide an explanation of the complex dynamics observed experimentally; the model takes into account geometric shell nonlinearities, electrodynamic shaker equations and the shell shaker interaction


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