The present paper is focused on the dynamic analysis of circular cylindrical shells under seismic excitation: the excitation direction is the cylinder axis, the shell is clamped at the base and connected to a rigid body on the top, the base provides the seismic excitation which is supposed sinusoidal. 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 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.
Dynamic instabilities of circular cylindrical shells subjected to seismic excitations / Pellicano, F.. - 3:(2010), pp. 1955-1962. (Intervento presentato al convegno 17th International Congress on Sound and Vibration 2010, ICSV 2010 tenutosi a Cairo, egy nel 2010).
Dynamic instabilities of circular cylindrical shells subjected to seismic excitations
Pellicano F.
2010
Abstract
The present paper is focused on the dynamic analysis of circular cylindrical shells under seismic excitation: the excitation direction is the cylinder axis, the shell is clamped at the base and connected to a rigid body on the top, the base provides the seismic excitation which is supposed sinusoidal. 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 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.
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
