冲压空气涡轮系统结构协同优化  

Collaborative Optimization of Ram Air Turbine System Structures

作　　者：夏天翔 卢岳良[1,2] 柯兵 XIA Tianxiang;LU Yueliang;KE Bing(AVIC Nanjing Engineering Institute of Aircraft System,Nanjing 211106,China;Aviation Science and Technology Key Laboratory of Aviation Mechanical and Electrical System,Nanjing 211106,China)

机构地区：[1]航空工业南京机电液压工程研究中心能源传动部,南京211106 [2]航空机电系统综合航空科技重点实验室,南京211106

出　　处：《南京航空航天大学学报》2021年第4期583-590,共8页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：航空科学基金(20182809005)资助项目。

摘　　要：针对冲压空气涡轮系统,首先分析了结构在贮存场景和工作场景下的载荷工况,然后对各工况下的约束进行数学建模。基于敏感性分析方法发现,冲压空气涡轮结构方案设计中的关键设计变量包括支撑臂、收放作动器、舱门连杆的内外径以及它们之间的连接点位置。之后,建立了冲压空气涡轮系统结构的动态松弛协同优化模型。该优化模型中,首先针对贮存场景和工作场景分别进行考虑多工况约束的结构优化,然后在系统级借助动态松弛因子进行优化变量的协调。最终,本文在Isight多学科设计优化软件中实现相关仿真分析、工具集成和优化求解。基于动态松弛的协同优化方法,本文将冲压空气涡轮的结构重量优化至初始重量的87%,优化效果显著。The load cases of ram air turbine(RAT)system are firstly analyzed aim at the storage scenario and utilization scenario.Then the mathematical models of the constraints under all the load cases are constructed.Based on these mathematical models,the structure optimization model of the ram air turbine system is established by using collaborative optimization method.In this optimization model,the multi-load-cases structure optimization is firstly carried out for the storage scenario and utilization scenario.Meanwhile,the optimized parameters are coordinated with aid of the dynamic relaxation factor.Finally,the integration of relative simulation analysis tools and the optimization are achieved in Isight multidisciplinary design optimization software.The optimization results show that the collaborative optimization method established in this paper can significantly reduce the weight of the ram air turbine system structures.

关 键 词：冲压空气涡轮系统 结构优化 协同优化 动态松弛 多工况 

分 类 号：V245[航空宇航科学与技术—飞行器设计]