改型等强度壳的理论与工程应用  

THEORY AND ENGINEERING APPLICATION OF MODIFIED SHELL OF CONSTANT STRENGTH

作　　者：白雪飞[1] 任文敏[2] 郭日修[1] 

机构地区：[1]海军工程大学船舶与海洋工程系,湖北武汉430033 [2]清华大学航天航空学院工程力学系,北京100084

出　　处：《工程力学》2007年第z2期155-160,共6页Engineering Mechanics

摘　　要：提出一种新型连接结构:在相邻的两段不同直径圆柱壳之间嵌入一段"改型等强度壳",构成"柱-改型-柱"组合壳,使得两段不同直径的圆柱壳光顺地连接,可以大幅度降低结合部的局部弯曲应力。应用旋转壳有矩理论分析了这些组合壳的应力分布,对其工程应用——作为连接结构的"改型等强度壳"几何参数的选择提出了建议。A new type of connecting structure—modified shell of constant strength is presented. By using this type of connecting structure, two adjacent cylindrical shells of different diameter can be smoothly connected and the bending stress at the conjunction section can be reduced significantly. Then, based on bending theory of shells of revolution, the stress distribution is analyzed for the combined shell named 'cylinder-modified-cylinder', composed of two cylindrical shells of different diameters connected by a modified shell of constant strength. As for engineering application, the modified equicohesive shell can be used as a connecting structure and some recommendations on the choice of the geometrical parameters are proposed.

关 键 词：旋转壳 应力分析 有矩理论 改型等强度壳 连接结构 工程应用 

分 类 号：O344.3[理学—固体力学]