航空发动机轮盘参数化结构优化

为降低航空发动机轮盘的质量，提高发动机推质比，对发动机转子轮盘进行参数化结构优化设计.研究辐板不同高度处厚度与轮盘径向破裂裕度的关系，以简化轮盘辐板优化方法.以周向破裂转速裕度为约束条件，体积最小为优化目标函数，利用Isight软件和有限元数值模拟方法研究轮盘盘心优化方法，并通过算例计算验证其正确性.结果表明：在满足约束条件的基础上，轮盘体积减小8.66%，最大等效应力减少10.4%.该方法可为航空发动机轮盘轻量化开发提供参考.

Parameterized structural optimization on aeroengine turbine disk

To reduce the aeroengine disk mass and improve the thrust to weight ratio of engine, the parameterized structural optimization is performed on an engine rotor disk. The optimization method of disk web is simplified by researching the relation between web thickness in different heights and radial burst margin of disk. Taking circumferential burst speed margin as the constraint condition and minimum volume as optimization objective function, Isight software and finite element analysis simulation is used to study disk center optimization method, and an example is calculated to verify its correctness. The results show that, on the basis of satisfying constraint condition, the disk volume is reduced by 8.66% and the maximum equivalent stress is reduced by 10.4%. The method can provide reference for the light weight development of aeroengine turbine disk.