第一作者孔祥宏男，博士生，1986年1月生

空间站柔性太阳翼热诱发振动分析

孔祥宏，王志瑾

(南京航空航天大学飞行器先进设计技术国防重点学科实验室，南京210016)

摘要：柔性太阳翼随空间站在轨运行时会受到周期性的热载荷作用，为研究热载荷对柔性太阳翼的影响，采用热-结构非耦合分析方法对柔性太阳翼进行了热诱发振动分析。提出了等效位移法，按照节点位移等效原则计算柔性太阳翼有限元模型各节点的等效温度载荷，再以该载荷为激励计算柔性太阳翼的动态响应。通过自编的Python程序实现等效温度载荷计算过程中的数据处理，以及热诱发振动分析流程中的有限元前后处理。通过与理论解和数值解作对比，验证了基于等效位移法求解等效温度载荷并用于非耦合热诱发振动分析的方法的准确性。通过对柔性太阳翼的热诱发振动分析，得到了柔性太阳翼的动态响应数据，发现了柔性太阳翼出地球阴影区时的刚柔耦合情况。分析结果可以为柔性太阳翼的设计和改进以及在轨的安全性、可靠性的评估提供参考。

关键词：柔性太阳翼；热诱发振动；位移等效原则；等效温度载荷；刚柔耦合

基金项目：江苏高校优势学科建设工程资助项目

收稿日期：2014-01-08修改稿收到日期：2014-03-07

中图分类号:V415.4文献标志码：A

Thermally induced vibration analysis of a space station’s flexible solar wing

KONGXiang-hong,WANGZhi-jin(Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract:A flexible solar wing(FSW) suffers from periodic thermal load when running on orbit together with a space station. In order to investigate the effect of thermal load on FSW, an uncoupled thermal-structural analysis method was introduced to perform the thermally induced vibration analysis(TIVA) of FSW. The finite element(FE) method and the equivalent displacement principle of nodes were used to calculate equivalent temperature loads(ETLs) on nodes of the FSW’s model and then to calculate the dynamic response of FSW under ETLs. A self-compiled Python program was provided to process the data of the ETLs calculation and complete the FE pre-and post-processing for TIVA. Comparing the theoretic results with the numerical ones, it was shown that the TIVA method is accurate; with TIVA, the dynamic response of FSW is gotten, and the rigid-flexible coupling phenomenon of FSW is found out; the results of TIVA can offer a reference for the design and improvement of FSW, and can also be used to assess the security and reliability of FSW.

Key words:flexible solar wing; thermally induced vibration; equivalent displacement principle; equivalent temperature load; rigid-flexible coupling

空间站在轨运行期间，会周期性地进出地球阴影区和日照区，在太阳辐射、地球反照等热载荷的作用下，空间站外露无热防护的部件的温度会周期性地变化。……