基于多目标优化的航空重油活塞发动机双质量飞轮毂盘结构轻量化设计  

Lightweight design of flywheel hub structure for aviation heavy-fuel piston engine based on multi-objective optimization

作　　者：卢俊文 王斌 王倩营 LU Junwen;WANG Bin;WANG Qianying(College of Aviation Engineering,Civil Aviation Flight University of China,Guanghan 618307,China;Aircraft Repair&Overhaul Plant,Civil Aviation Flight University of China,Guanghan 618307,China;Air Traffic Management Center,Civil Aviation Flight University of China,Guanghan 618307,China)

机构地区：[1]中国民用航空飞行学院航空工程学院,四川广汉618307 [2]中国民用航空飞行学院飞机修理厂,四川广汉618307 [3]中国民用航空飞行学院空中交通管理中心,四川广汉618307

出　　处：《兵器装备工程学报》2024年第11期202-211,共10页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(52075544);四川省通用航空器维修工程技术研究中心项目(GAMRC2021YB06)。

摘　　要：针对航空重油活塞发动机双质量飞轮毂盘在实际运行中多次发生疲劳或断裂的问题,提出一种基于响应面法的多目标联合优化方法。建立毂盘有限元仿真计算模型,以毂盘结构参数为设计变量,质量和疲劳寿命设定为优化目标,对结构参数进行灵敏度分析确定优化参数。根据Kriging响应面模型与非参数回归响应面模型拟合精度确定后续多目标优化的响应面模型。通过多目标优化得到1403组pareto解集,从1403组解集中选出最优解,并通过有限元仿真计算验证最优解。结果表明:毂盘质量减轻约3.3%,疲劳寿命提升约87.5%,最大Von mises应力降低约5.4%,最大总变形降低约2.1%;该优化方法在确保安全性的前提下明显提升毂盘轻量化效果,同时为相关结构的优化设计提供参考。The objective of this study is to propose a multi-objective joint optimization method for response surface methodology,which addresses the issue of frequent fatigue or fractures in the flywheel hub of heavy-fuel piston aviation engines during actual operation.A finite element simulation calculation model of the flywheel hub is established.Taking the structural parameters of the flywheel hub as design variables and mass and fatigue life as optimization objectives,sensitivity analysis of structural parameters is carried out to determine the optimization parameters.Based on the fitting accuracy evaluation between Kriging response surface model and non-parametric regression response surface model,an appropriate response surface model for subsequent multi-objective optimization is determined.Through multi-objective optimization,a Pareto solution set consisting of 1403 solutions is obtained.The optimal solution from this set is selected and verified by finite element simulation calculation.The results demonstrate approximately 3.3%reduction in flywheel hub mass,an improvement in fatigue life by approximately 87.5%,a decrease in maximum Von Mises stress by around 5.4%,and roughly a 2.1%reduction in maximum total deformation can be achieved using our proposed optimization method while ensuring safety of the hub structure effectively.This research provides valuable insights for optimizing related structures with enhanced lightweightness without compromising safety.

关 键 词：双质量飞轮 毂盘 响应面 多目标优化 轻量化 

分 类 号：TH122[机械工程—机械设计及理论]