中国空间科学技术

• • 上一篇    下一篇

碳纤维抛物面反射器的热变形测量技术和位移分析

李立强   

  1. 北京环境试验工程研究所
  • 发布日期:1987-08-25

MEASUREMENT TECHNIQUE OF THERMAL DISTORTIONS AND ANALYSIS OF DISPLACEMENTS FOR CARBON FIBRE PARABOLIC REFLECTORS

Li Li qiang (Beijing Institute of Environmental Testing Engineering)   

  • Published:1987-08-25

摘要： 为了解决卫星碳纤维复合材料抛物面天线的热变形问题,本文提出了利用应变片测量应变分布、然后计算位移的方法。文中介绍了将应变片应用于—180～120℃温度范围的碳纤维复合材料结构的热变形测量技术。最后进行了碳纤维抛物面天线反射器的真空冷热交变试验。

关键词: 卫星天线, 碳纤维增强复合材料, 抛物面反射器, 应变测量, 热特性, 位移, 分析

Abstract: This paper presents a method to measure strain distributions and then calculate the displacements for solving the problem of thermal distortion of a satellite parabolic antenna made of carhon fibre composites. The technique using strain gages to measure distortions of carbon fibre composite structure induced by temperature in the range of -180～120℃ is described. Finally, a thermal cycling test completed in vacuum on a carbon fibre parabolic antenna reflector is also deseribed, and the results of the measured thermal distortions and displacements obtained by analysis are satisfactory.