纵向加筋圆柱壳静动力性能分析

The Static and Dynamic Behavior of Cylindrical Shells with ongitudinal Rib Stiffeners

用壳条元和流体边界元统一分析了纵向加筋圆柱壳的静动力性能，利用Ｄ′Ａｌｅｍｂｅｒｔ原理和Ｈａｍｉｌｔｏｎ变分原理建立系统运动控制方程．对纵向加筋的布置形式及尺寸大小对于静动力性能的影响进行了系列的数值计算，得出了一些有价值的结论。

The static and dynamic behavior of cylindrical shells with longitudinal rib stiffeners is analyzed with the shell strip element and fluid boundary element.The energy functional.ofthe structural system is worked out by D′Alembert′s principle and a frequency equation forsystem motion control is obtained by the Hamilton′s variational principle. Numerical compu-tation for the effect of the arrangement of the stiffeners and its dimensions as well as thenumbers on the static and dynamic performance have been carried out.Some useful conclu-sions of practical significance are given.