跨声速运输机机翼气动/结构优化平台AeroStruct的发展及应用  

Development and Application of AeroStruct,an Aerodynamic/Structural Optimization Platform for Transonic Transport Aircraft Wings

作　　者：张科施[1] 凌圣博 韩忠华[1,2] Zhang Keshi;Ling Shengbo;Han Zhonghua(Northwestern Polytechnical University,Xi’an 710072,China;National Key laboratory of Science and Technology on Aerodynamic Design and Research,Xi’an 710072,China)

机构地区：[1]西北工业大学,陕西西安710072 [2]翼型、叶栅空气动力学国家级重点实验室,陕西西安710072

出　　处：《航空科学技术》2022年第4期47-56,共10页Aeronautical Science & Technology

基　　金：航空科学基金(2019ZA053004)。

摘　　要：跨声速运输类飞机由于机翼展弦比大,使得气动加载下机翼变形量大,气动/结构耦合效应明显,因而开展耦合优化设计对提升飞机综合性能具有重要意义。本文研发了一种对该类机翼进行变可信度气动/结构耦合优化设计的自主软件平台(AeroStruct),气动数值模拟可选用N-S/Euler/全速势方程,结构数值模拟集成了结构有限元分析平台,气动/结构耦合分析采用径向基函数插值方法进行数据传递,在自主开发的SurroOpt代理优化软件基础上集成分析模块,实现了考虑静气动弹性效应的机翼气动/结构耦合优化设计。对uCRM-9标模机翼进行了包含76个设计变量的减重优化设计,最优方案比基准机翼结构质量减小约13%,优化效果显著。As their aspect-ratios are high,the transonic aircraft wings exhibit geometrically nonlinear behavior so that it cannot be neglected.The advances in Multidisciplinary Design Optimization(MDO)have enabled optimizations of aircraft wings using high-fidelity simulations of coupled aerodynamic and structural behavior.This work aims to establish an aero/structural design optimization platform for the transonic wings,which is meaningful for promoting aircraft design technology.In the"AeroStruct"platform,the codes of Navier-Stokes(N-S),Euler,full-potential equations are available for the aerodynamic simulations,NASTRAN and ANSYS platforms are possible for the structural finite element analysis,and the Radius Basis Function(RBF)is realized for interpolation of fluid/structural interaction.The in-house code"SurroOpt",as a tool of surrogate-based optimizations,is used to perform wing aero/structural global optimization.Our platform is preliminarily validated by an uCRM-9 wing optimization problem with 76 design variables,in which the wing structural weight is reduced by 13%with the limitation of some aero/structural constraints.

关 键 词：机翼设计 多学科优化设计 气动/结构耦合数值模拟 气动设计 结构设计 

分 类 号：V221[航空宇航科学与技术—飞行器设计]