摘要
本文试验研究了三个加肋圆柱壳模型的振动相似性。结果表明 ,模型的无量纲频率 ωl/E/ρ和归一化振动加速度l3ρa/F相似。模型设计和试验时 ,缩比因子 λl 、谱级倍频程数K和频率移动的频带数N应满足关系2N/K=λl。
This paper investigates experimentally the vibrational similarity among three models of stiffened cylindrical shells.The results show that the dimensionless frequency and the normalized vibration acceleration of models are similar.The measurement has also told us that scaling factor ,octave index K of spectrum level and number of octave band N of frequency shift should satisfy .
出处
《船舶力学》
EI
2001年第3期84-88,共5页
Journal of Ship Mechanics
关键词
振动相似性
加肋圆柱壳
试验研究
模型
船舶
virbrational similarity
stiffened cylindrical shells
experimental investigation
