赵浩江, 闫勇. 可展开柔性薄膜聚束镜的成形与聚光实验研究[J]. 红外与激光工程, 2014, 43(S1): 24-29.
引用本文: 赵浩江, 闫勇. 可展开柔性薄膜聚束镜的成形与聚光实验研究[J]. 红外与激光工程, 2014, 43(S1): 24-29.
Zhao Haojiang, Yan Yong. Study on forming of deployable spotlight reflector made of flexible films and concentrating solar experiment[J]. Infrared and Laser Engineering, 2014, 43(S1): 24-29.
Citation: Zhao Haojiang, Yan Yong. Study on forming of deployable spotlight reflector made of flexible films and concentrating solar experiment[J]. Infrared and Laser Engineering, 2014, 43(S1): 24-29.

可展开柔性薄膜聚束镜的成形与聚光实验研究

Study on forming of deployable spotlight reflector made of flexible films and concentrating solar experiment

  • 摘要: 基于二次侧地线和抛物反射面的几何特点,给出了近似的二次测地线法,通过对裁剪线上的离散点进行多项式拟合,得到空间膜片的平面展开边界,进行了裁剪步长和膜片投影角度对裁剪误差的影响分析,可知步长对其精度影响不大,膜片的投影角度对精度影响较大,当其为10时,面积误差仅为0.27%.为了避免平面外的集中力使薄膜产生大变形,利用梁单元进行膜结构等效,进行了反射面的变形分析,得到一定载荷下的结构变形.并进行了反射面的加载试验,验证了等效方法的正确性.基于薄膜的裁剪分析和力学分析进行了薄膜反射面的聚光实验,聚光效果较好,其分析方法为大尺寸反射面的设计奠定了基础.

     

    Abstract: Based on the secondary geodesic line method and the geometric characteristic of parabolic reflector, the approximate secondary geodesic line method was obtained. To get the expansion boundary of the space film in plane, polynomial fitting for the discrete point on the tailoring line was conducted. And the effects of the tailoring step length and tailoring film projection angle were analyzed. The results showed that step length affects the accuracy of tailoring less than projection angle. The error was only 0.27% when the projection angle was 10. The deformation analysis of the reflector was achieved by using beam structure for equivalence of the thin film. The equivalent method could avoid large deformation caused by the force out of thin film. Load test for the reflector was carried to verify the correct of the equivalent method. Spotlight experiment was conducted based on the tailoring analysis and deformation research. The spotlight result is good. The tailoring analysis method and equivalence method can be the bases of the design for large reflector.

     

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