大尺度充气式桁架太阳能阵列设计及动力学分析  

Design and Dynamics of Large-scale Solar Arrays with Inflatable Mast

作　　者：卫剑征[1] 张鹏飞[1] 马瑞强[1] 陈雪岩[1] 谭惠丰[1] WEI Jianzheng;ZHANG Pengfei;MA Ruiqiang;CHEN Xueyan;TAN Huifeng(National Key Laboratory of Science and Technology for Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150080)

机构地区：[1]哈尔滨工业大学特种环境复合材料技术国家重点实验室,哈尔滨150080

出　　处：《机械工程学报》2020年第5期93-99,共7页Journal of Mechanical Engineering

摘　　要：提出充气式桁架展开大尺度太阳能阵列结构设计方法,具有热固化复合材料充气铰实现高效折叠收拢,以及展开后提高结构刚度的特性。研制了原理样机,并进行了地面展开试验,验证了充气展开及其充气式桁架的性能。可展开桁架结构设计特色是将可折叠充气支撑管与刚性碳纤维杆相结合使用,减少热功耗并提高结构刚度。考虑可展开桁架的腹管设计以及材料固化前后对大尺度结构动态特性的影响,对太阳能阵列的半结构进行有限元建模,并采用BlockLanczos法求解结构的模态,计算分析了不同激励位置时结构阻尼对结构的振动响应。结果表明,所设计的充气式桁架展开大尺度太阳能阵列采用热固化方法,能实现大尺度结构从柔性大转动展开向高刚度结构特性的改变;且对低频结构具有振动抑制效果,其振动响应能受到激励幅值和载荷的影响,并显著改变结构的动力学性能。A structural design method of large-scale solar array deployed was presented by an inflatable mast, which has the characteristics of thermal curable composite inflatable hinges to achieve efficient folding, and to improve structural stiffness after deployment. The principle prototype is developed, and the ground deployment test is carried out to verify the performance of deployment of the inflatable mast. The structural design of deployable mast is characterized by the combination of foldable inflatable tubes and carbon fiber beams, which can reduce thermal power consumption and improve structural stiffness. Considering the web design of deployable mast and the influence of rigidizable material on the dynamic characteristics of large-scale structures, the finite element model of the semi-structure of solar array is established, and the modal of the structure is solved by Block Lanczos method. The vibration response of structure under different excitation positions is calculated and analyzed. The results show that the large-scale solar array deployed by inflatable mast can change the characteristics of large-scale structure from flexible large rotation deployment to high stiffness structure by thermal curing method, and the structure has the effect of vibration suppression. These structure responses are affected by excitation amplitude and load, and the dynamic performance of the structure is significantly changed.

关 键 词：可展开桁架 充气 太阳能阵列 大尺度 柔性 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]