摘要
本文对密加肋的柱壳采用正交各向异性理论,将环肋“平摊”在整个柱壳上,用速度势来描述流场,通过流固交界面处的速度和位移的连续性条件,采用Flügge壳体理论建立了水动压力和柱壳的流固耦合振动方程。对两端简支的环肋柱壳在流场中的振动特性进行了研究,讨论了环肋尺寸变化、布置形式以及静水压力和水动压力对固有频率的影响。并对有关文献的理论和实验结果进行了比较,表明本文方法的结果是比较准确的。
A general analysis method is presented for evaluating the free vibration characteristics of submerged, evenly spaced uniform ring-stiffened cylindrical shell with simply supported ends. The effects of the eccentric stiffeners are averaged over the thin-walled isotropic cylindrical shell. The coupling between the shell and fluid medium is taken into account. The solution is obtained through a direct solution procedure in which Flugge′s shell equations are used. Numerical results obtained are compared with experimetal and analytical results by other inverstigators, The comparison of these results indicates the method used is this paper is reasonably accurate.
出处
《中国造船》
EI
CSCD
北大核心
1990年第2期67-79,共13页
Shipbuilding of China
