基于拓扑优化的卫星铰链机构设计

• 作 者: 张华 杜三虎 肖余之
• 机 构: 上海市空间飞行器机构重点实验室,上海宇航系统工程研究所,
• 出 处: 机械设计与研究
• 发表日期: 2012年05期
• 关键词: 铰链机构 拓扑优化 变密度法 减重

针对某卫星天线铰链机构的超重问题,采用变密度优化设计方法,对铰链机构开展了拓扑结构优化。文章对比分析了优化前后的铰链机构刚度情况,优化后的铰链拓扑结构在满足刚度要求的约束条件下,质量相比初始状态减轻了22.6%,同时后续的力学试验结果也验证拓扑优化后的铰链结构能承受确定的力学环境载荷。计算分析结果表明优化后的拓扑结构有效解决了铰链机构重量的超标问题。

Aiming at the overweight problem of a satellite antenna hinge mechanism, the topology optimization of the hinge mechanism is carried out by using the variable density optimization design method. The stiffness of the hinge mechanism before and after the optimization is compared and analyzed. The optimized hinge topology reduces the mass by 22.6% compared with the initial condition under the constraint of meeting the stiffness requirement. Meanwhile, the subsequent mechanical test results also verify that the topologically-optimized hinge The structure can withstand certain mechanical environmental loads. The calculation and analysis results show that the optimized topology effectively solves the problem of excessive weight of the hinge mechanism.