5/16/2018 圆上活文大华 MDO Developments 国上清大学 Multidisciplinary Analysis and Optimization ed str namic optimization MDO has been growing since 90s and coupled analysis is being increasingly adopted to tackle -Nonlinear interactions between disciplines -Increased complexities and fidelities of discipline models .MDO benefited from e ng comp Flexible AIRCRAFT MULTIDISCIPLINARY OPTIMIZATION oorornenin ong orn enin Song Aircraft Aerodynamic Design 圈上活大坐 A Typical MDO Process(DLR) 园上活道大整 Initial Design Variables Elements in MDO process Updated Design Variables Multi-Disciplinary Analysis tural Mechanics DLR Mesh Fight Mechanics Mission Analysis A1A4-2007-1857(LR:A1AA-2007-150DLR 8 System Perspective-Airbus view 图上洋文通大学 Optimal Conceptual Sizing of Aircraft 园上洋文大学 MDO is an integrated process building and management 性能 用 CAE Modr 市场分析 气动 总体设计 结构 评结与优化 始值 参数 ENGINEERING TOOLBOX 系桃 最优方案 航 Ref aero135 Shanghal Jao Tong Unkersty-Dr.Wenbin Song 0 55/16/2018 5 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics AIRCRAFT MULTIDISCIPLINARY OPTIMIZATION 25 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics MDO Developments • Multidisciplinary Analysis and Optimization – Started from decoupled structural and aerodynamic optimization – Based on the coupling of CAE tools and numerical optimization • MDO has been growing since 90s and coupled analysis is being increasingly adopted to tackle – Nonlinear interactions between disciplines – Increased complexities and fidelities of discipline models • MDO benefited from – Increasing computing power – Flexible and expandable process integration method 26 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Aircraft Aerodynamic Design 27 Parametric Model Geometry Definition Structural OptimizationPerformance Evaluation Aerodynamics Stability and Control Propulsion Optimizer Induced Drag Friction and Form Drag Wave Drag Interference Drag Offline CFD Analysis Offline Aeroelasticity Initial Design Variables Objective Function, Constraints Drag Weight Updated Design Variables © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics A Typical MDO Process (DLR) • Elements in MDO process 28 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics System Perspective – Airbus view • MDO is an integrated process building and management 29 Ref: aero135 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Optimal Conceptual Sizing of Aircraft 30 气动 结构 推进 系统 环境 评估与优化 总体设计 参数 初始值 最优方案 适航 重量 费用 性能 市场分析