磁悬浮反作用飞轮密封罩结构的优化设计

研究了磁悬浮反作用飞轮密封罩结构的优化设计方法。基于有限元分析理论分别建立了两种外形设计方案的密封罩有限元模型,对密封罩壳体进行了静强度分析并利用特征值屈曲法分析其抗压稳定性,比较了两种设计方案的优缺点;对其中一种壳体的设计方案进行了变外形参数的结构优化设计,通过分析两个关键外形参数和壳体厚度对密封罩整体性能的影响,得出了最优的密封罩设计方案,最终得到壳体的设计质量为0.197 kg,稳定性系数达5.374。该优化设计方法提高了密封罩设计的可靠性和效率,对飞轮系统整体优化设计有重要意义。

Optimization design of sealed cowling structure for magnetic bearing reaction flywheel

In order to minimize the mass and optimize the dynamic performance of the sealed cowling for a magnetic bearing reaction flywheel, the optimum design method for sealed cowling structure is researched. The Finite Element Models(FEM) for the sealed cowling of two outline design schemes are established based on the FEM theory. The static intensity in one of the sealed cowlings is analyzed, and the stability of each sealed cowling to contract compressive stress is analyzed using an eigenvalue buckling technique. Then the two design schemes are compared each other,the optimum design of variable parameter outline is obtained.The effects of two key outline parameters and the thickness of the shell on the whole performance of the sealed cowling are analyzed,the results show that the optimum design scheme is in the shell mass of 0.197 kg, and the stability coefficient of 5.374. The method improves the reliability and efficiency of sealed cowling design, and has important significance in optimization design of the flywheel system.