An experimental investigation on vibrational similitude of stiffened cylindrical shells

摘要

This paper experimentally investigates the vibrational similitude between three models of stiffened cylindrical shells. The results show that the dimensionless frequency omegal/(E/rho)~(1/2) and the normalized vibration acceleration l~3 rhoa/F of models are similar. The measurement has also told us that scaling factor lambda_1 square octave index K of spectrum level and number of octave band N of frequency shift should satisfy 2~N/K=lambda_l.