This paper is focused on the experimental and theoretical analysis of circular cylindrical shells subject to base 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-like excitation. The goal is to investigate the shell response when a resonant harmonic 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, electro-dynamic shaker equations and the shell shaker interaction. © Civil-Comp Press, 2012.
Dynamic instability of circular cylindrical shells subject to base excitation / Pellicano, F.. - 99:(2012). (Intervento presentato al convegno 11th International Conference on Computational Structures Technology, CST 2012 tenutosi a Dubrovnik, hrv nel 2012).
Dynamic instability of circular cylindrical shells subject to base excitation
Pellicano F.
2012
Abstract
This paper is focused on the experimental and theoretical analysis of circular cylindrical shells subject to base 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-like excitation. The goal is to investigate the shell response when a resonant harmonic 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, electro-dynamic shaker equations and the shell shaker interaction. © Civil-Comp Press, 2012.
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
