Experimental Study on Vibrational Transmission Characteristics of a Ring-Stiffened Cylindrical Shell Model
A ring-stiffened cylindrical shell of experimental model with four equipment support pedestals was designed. The effect of vibr-ation transmission characteristics of the ring-stiffened cylindri-cal shell by the internal base structural style and layout positi-on was researched. The original mechanical admittances of su-pport pedestals were analyzed. Taking mechanical vibration ve-locity mobility as evaluation index, the vibration transmission characteristics from pedestals to the surface of ring-stiffened cylindrical shell have been experimentally studied, the mecha-nical admittance distribution pattern of the cylindrical shell sur-face has been indicated. The difference of mechanical admitt-ances at different positions is large at low frequencies, which is influenced by the mode shape of vibration of the shell struc-ture. However, the difference of mechanical admittances of dif-ferent positions is little at high frequencies, and the vibration transmission characteristics from pedestals to cylindrical shell can be indicated by the concept of spatial equivalent mecha-nical mobility.
Chunliang Zhang and Paul P. Lin
H. B. Wen et al., "Experimental Study on Vibrational Transmission Characteristics of a Ring-Stiffened Cylindrical Shell Model", Applied Mechanics and Materials, Vols. 226-228, pp. 285-289, 2012