大型太阳帆薄膜折叠及展开过程数值分析  

Numerical Analysis on the Deployment and Folding Process of Large-scale Solar Sail Membrane

作　　者：黄小琦 王立[1] 刘宇飞[1] 杨辰[1] 陈颖[1] 

机构地区：[1]中国空间技术研究院钱学森空间技术实验室,北京100094

出　　处：《中国空间科学技术》2014年第4期31-38,共8页Chinese Space Science and Technology

基　　金："十二五"民用航天预先研究项目

摘　　要：针对深空太阳帆帆面薄膜折叠方式及太阳帆空间展开过程的优化问题,在叶内折叠、叶外折叠方式的基础上,提出了一种斜叶外折叠方式,并通过建立不同的参数模型,利用ANSYS/LS-DYNA有限元软件对5种折叠模型展开过程进行了力学分析。分析结果表明,新提出的斜叶外折叠方式是较适合空间应用的太阳帆帆面折叠方式。太阳帆在空间展开过程中帆面应力与展开速度、折叠宽度等因素相关,帆面与支撑杆连接的顶点区域是整块帆面应力最大的区域,应重点进行加固。研究结果将为大型太阳帆薄膜材料选择及结构设计提供重要依据。For the numerical optimization analysis on the folding and deployment process of the solar sail membrane, a skew leaf-out folding pattern was firstly proposed based on the leaf-in and leaf out folding patterns. Five folding models with different folding parameters were built upon the three folding patterns. The finite element software ANSYS/LS-DYNA was used to simulate the deployment of these folding patterns. The result shows that solar sail membrane stress along the deployment process is related to the deployment speed and folding width. The area close to the vertex of square solar sail membrane has the highest stress, and should be reinforced. The skew leaf-out folding pattern is the most appropriate folding pattern for the solar sail membrane.

关 键 词：薄膜折叠展开 应力分布 数值分析 太阳帆 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]