网格整体加筋贮箱圆筒壳结构优化设计  

Structural Optimal Design for Integrated Stiffened Cylindrical Shell of Fuel Tank

作　　者：周思达[1] 刘莉[1] 朱华光[1] 

机构地区：[1]北京理工大学宇航学院,北京100081

出　　处：《南京航空航天大学学报》2010年第3期363-368,共6页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：为完成网格整体加筋贮箱圆筒壳的结构优化设计,本文首先开展了网格整体加筋贮箱圆筒壳的有限元模型参数化研究;然后基于参数化模型,进行了网格加筋角度的优化设计和加筋尺寸与壁面厚度尺寸优化设计,讨论了网格尺寸和加筋角度与结构屈曲稳定性和质量之间的关系;并利用实验设计的方法构造响应面代理模型对网格尺寸和加筋角度进行了优化设计。通过以上参数化建模、代理模型构建和优化设计,得到了一套较为完整可行的网格整体加筋贮箱圆筒壳结构优化设计方法。最后还对研究过程中发现的问题进行了总结。To achieve the structural optimal design for integrated stiffened cylindrical shell, firstly, this paper studies parameterization modeling of integrated stiffened cylindrical shell; Then, based on the model, the included angle of stiffeners and the thickness of the skin and stiffeners are optimized. The impact on the structural mass and buckling stability is; analyzed due to the size of the grid cell of inte- grated stiffened cylindrical shell and the included angle of stiffeners. Finally, based on the DOE methods, an optimization design for the size and the angle of stiffeners is implemented with a response surface method. After these work above, a series approaches of structural optimal design for integrated stiffened cylindrical shell are achieved.

关 键 词：结构 参数化 优化设计 

分 类 号：O302[理学—力学] TB121[理学—工程力学]