空间遥感器中心筒式主支撑结构设计与仿真

Design and Simulation of Central Cylinder Main Support Structure for Space Remote Sensor

针对某高分辨型光学成像载荷,从光学系统指标和结构稳定性要求出发,设计了一种具有加强结构的中心筒式主支撑结构。在空间遥感器的结构形式和光学系统指标要求的基础上,给出了中心筒式主支撑结构的构型方案和材料。根据临界应力理论,计算并分析了结构的失稳强度。通过尺寸优化,在保证结构的基频和位置精度最优的同时使相机得以大幅度减重。分析了中心筒式主支撑结构的静力学和动力学特性。有限元分析结果表明,结构满足光学系统公差,且具有足够的动刚度,以及对振动载荷的抵抗性良好。

Aiming at the high resolution optical imaging load,a central cylinder with reinforced structure is designed based on the requirements of optical system and structural stability.Based on the structure and optical system requirements of the space remote sensor,the configuration scheme and material of the central cylinder main support structure are determined.According to the critical stress theory,the instability strength of the structure is calculated and analyzed.By optimizing the size,the basic frequency and position accuracy of the structure is optimized,and the camera can reduce weight greatly.The static and dynamic characteristics of the central cylinder main support structure are analyzed.The results of finite element analysis show that the structure meets the tolerance of optical system and has enough dynamic stiffness to resist vibration loads.