形状记忆索网结构模型建立及实验研究  

Modeling and Experimental Study of Shape Memory Cable Net Structures

作　　者：潘逢群 蒋翔俊[1] 杜敬利[1] 刘佳[1] 范叶森[2] PAN Fengqun;JIANG Xiangjun;DU Jingli;LIU Jia;FAN Yesen(Key Laboratory of Electronic Equipment Structural Design,Ministry of Education,Xidian University,Xi an,710071;China Academy of Space Technology(Xi an),Xi an,710100)

机构地区：[1]西安电子科技大学电子装备结构设计教育部重点实验室,西安710071 [2]中国空间技术研究院西安分院,西安710100

出　　处：《中国机械工程》2023年第18期2186-2193,共8页China Mechanical Engineering

基　　金：国家自然科学基金(51775406);陕西省自然科学基金(2023-JC-ZD-29,2022JQ-561);芜湖西电产学研合作专项(XWYCXY-012021017-HT)。

摘　　要：针对星载索网结构天线在轨运行时由于空间环境导致的型面精度降低的问题,提出形状记忆索网结构。将形状记忆合金丝与索网结构进行集成,构成形状记忆索网结构。利用形状记忆合金丝的相变特性对索网结构反射面进行调整,以改善其在轨性能。利用2.2 m索网结构模型开展了常温实验和高低温实验。实验结果表明,常温环境下,形状记忆合金丝对索网结构型面精度的调节能力比较稳定;高低温环境中,与普通索网相比,形状记忆索网结构型面精度较高,形状记忆合金丝对索网结构反射面具有一定的调节作用。In order to solve the problems of reduced surface accuracy caused by space environment during the operation of spaceborne cable net antenna in orbit,a shape memory cable net structure was proposed.The shape memory alloy wires were integrated with the cable net structure to form a shape memory cable net structure.The reflector of the cable mesh structure was adjusted by using the phase transformation characteristics of shape memory alloy to improve the in orbit performance.Experiments were carried out using a 2.2 m cable net structure model under normal temperature and high and low temperature.The experimental results show that the shape memory alloy wires have a relatively stable ability to adjust the surface accuracy of the cable net structures at room temperature.In high and low temperature environments,compared with ordinary cable net,shape memory cable net structure has higher surface accuracy.Shape memory alloy wires have a certain adjustment effect on the reflector of cable net structures.

关 键 词：形状记忆索网结构 热变形 反射面调节 常温实验 高低温实验 

分 类 号：V443[航空宇航科学与技术—飞行器设计]