光学学报, 2019, 39 (5): 0523002, 网络出版: 2019-05-10   

背部支撑型空间反射镜镶嵌件粘接结构设计 下载: 1136次

Design of Adhesive Structure for Back-supported Space Reflector Inserts
作者单位
1 长光卫星技术有限公司, 吉林 长春 130000
2 中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033
摘要
基于不同的边界条件,建立了针对带锥度盲孔的空间相机反射镜组件胶层厚度的计算模型,利用力学模型计算粘接处符合设计要求的胶层厚度范围。通过建立的有限元模型,计算并拟合得到相应的胶层厚度-应力曲线,得出最优的胶层厚度为0.055 mm。为了检验粘接结构的面形精度,进行了自重、温升条件下的反射镜组件镜面变化的模拟分析,采用温度载荷法模拟实际固化后胶层收缩对镜面的影响,并进行组件试验。仿真和试验结果表明,胶层厚度在0.055 mm时反射镜组件具有足够的抵抗外界温变、振动干扰的能力,满足设计要求。
Abstract
In this study, we construct a model to calculate the thickness of the adhesive layer in the mirror subassembly of a space camera with a blind taper hole based on different boundary conditions. Further, a mechanical model is used to calculate the adhesive layer thickness range at the bonding part that satisfies the design requirements. Using the constructed finite element model, we calculate and fit the corresponding thickness-stress curve of the adhesive layer, and the optimum thickness is observed to be 0.055 mm. Subsequently, the change in the surface of the mirror subassembly is numerically analyzed under the self-weight and temperature-rise conditions in order to verify the surface shape accuracy of the adhesive structure. The temperature load method is employed to simulate the influence of the adhesive layer shrinkage on the surface, and the subassembly tests are performed. The simulation and test results demonstrate that the mirror subassembly exhibits a sufficient capability to resist the interference of the external temperature variation and vibration at an adhesive layer thickness of 0.055 mm, satisfying the design requirements.

于霁晨, 袁健, 丛杉珊, 李明璇, 贾学志. 背部支撑型空间反射镜镶嵌件粘接结构设计[J]. 光学学报, 2019, 39(5): 0523002. Jichen Yu, Jian Yuan, Shanshan Cong, Mingxuan Li, Xuezhi Jia. Design of Adhesive Structure for Back-supported Space Reflector Inserts[J]. Acta Optica Sinica, 2019, 39(5): 0523002.

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