摘要
基于MSC.NASTRAN通用结构分析软件用有限元法对某卫星平台轻量化设计进行了研究。主承力结构选用新型网格状复合材料承力筒结构,优化目标为结构质量最轻。在结构强度、刚度和稳定性,满足卫星平台使用要求的约束条件下,讨论了承力筒的网格交角、网格数、网格截面尺寸与蒙皮厚度、铺层方式,以及材料选择等优化变量的确定。对根据优化结果制造的1∶1的承力筒结构的实验验证证明结构优化正确。
The mass-lightening design of the force-bearing structure for some satellite platform was studied by using finite element method in MSC.NASTRAN software in this paper.The new gridding composite grid stiffened cylinder was chosen.The objective of the optimization was to minimize the weight of the structure.Design variables including angle and number of the grid,cross-section dimensions of the gird,thickness of the envelope,stacking sequences and materials were optimized under the constraint conditions of the stiffness,strength and stability which were satisfied the requirements of the structure.The experimental results of a composite grid stiffened cylinder with a scale of 1∶1 was fabricated showed that the optimization was correct.
出处
《上海航天》
2011年第3期50-54,共5页
Aerospace Shanghai
关键词
卫星
中心承力筒
网格结构
优化设计
Satellite
Cylinder
Grid structure
Optimization design
