飞行器电池板简化建模及优化设计方法研究

Research on Model Simplification and Optimization Design of Battery Plate on Space Vehicle

针对飞行器上设备结构日益精细的设计分析需求,以飞行器电池板类结构为研究对象,对动力学环境下结构模型简化及优化设计方法进行了研究。首先建立电池板及安装设备整体简化模型,通过调整电池安装刚度获得了与实际模态相一致的简化模型。接着对电池板进行拓扑优化设计,得到最优加强筋分布方案。最后,在保持板质量不变的条件下,对电池板设计域进行整体尺寸优化设计,提高了整体刚度。进而为后续飞行器相关结构动力学模型提供一种高效的系统规范性的建模及设计思路。

Since the analysis of device structures on space vehicle is required to be more and more detailed, a structure simplification and optimization method is studied based on a battery panel on space vehicle under dynamic environment. Firstly, the overall model is simplified, and by adjusting the stiffness of the FEM model and performing model analysis, a reliable model that matches the actual structure is achieved. Secondly, topology optimization is conducted to achieve an optimized layout plan of reinforce ribs, according to which the FEM model is built for the battery panel with reinforce ribs. Thirdly, size optimization design is conducted within design area. Overall stiffness and base frequency are both raised while keeping the total weight unchanged. Consequently, the dynamic model building and design method is offered for space vehicle’s structure design and analysis in the future.