带大开口观察窗的球形耐压壳的稳定性分析  

The Stability Analysis of Spherical Pressure Shell with a Large Opening

作　　者：卢骏锋[1] 赵耀[1] 张维衡[1] 

机构地区：[1]华中科技大学交通科学与工程学院,湖北武汉430074

出　　处：《中国造船》2008年第4期135-141,共7页Shipbuilding of China

摘　　要：球壳的结构性能对缺陷很敏感。在实际工程问题中所制造的球壳模型由于带有几何上的不完善,其结构性能的分析相对无缺陷模型更为复杂。为研究带大开口球壳结构的稳定性,对冷冲压加工的带大开口的球壳进行了详细的几何测量,据此建立有限元模型,进行了包含接触面滑动、几何大变形、材料非线性等特性的屈曲分析,并用半经验公式对局部缺陷做了稳定性计算,由此得出一些可供设计使用的带大开口球壳结构性能的规律与结论。Structural properties of spherical shell are sensitive to geometric imperfection. In practical engineering, the spherical shell model actually manufactured is not intact and its analysis of structural performance is more complicated than ideal model. In order to analyze the stability of the spherical shell large opening, semi-empirical formula is employed to perform the stability ca more precise analytical result, moreover, an example analysis is carried out pressure shell with large opening using finite element cal contact slip, geometric large deformation and material nonl gained and some calculation rules are discussed. culation rules the analytical method of imperfect culation software consider mea According to shell structur lculation for obon the spherical ing the effect of rity. Then, precise calculation result is the forgoing calculation result and cale can be determined.

关 键 词：船舶 舰船工程 球形耐压壳 几何缺陷 稳定性 非线性 

分 类 号：U661.42[交通运输工程—船舶及航道工程] U674.941[交通运输工程—船舶与海洋工程]