机翼结构重量预测的多学科分析优化方法

doi:10.7527/S1000-6893.2015.0205

方案设计与多学科分析

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机翼结构重量预测的多学科分析优化方法

余雄庆, 欧阳星, 邢宇, 王宇

南京航空航天大学航空宇航学院, 南京 210016

收稿日期:2015-05-11 修回日期:2015-07-18 出版日期:2016-01-25 发布日期:2015-08-18
通讯作者: 余雄庆,Tel.:025-884892102,E-mail:yxq@nuaa.edu.cn E-mail:yxq@nuaa.edu.cn
作者简介:余雄庆男,博士,教授,博士生导师。主要研究方向:飞行器总体设计,飞行器多学科设计优化。Tel:025-84892102,E-mail:yxq@nuaa.edu.cn;欧阳星男,博士研究生。主要研究方向:飞行器多学科设计优化。E-mail:ouyangxing@nuaa.edu.cn;邢宇男,博士研究生。主要研究方向:飞行器多学科设计优化。E-mail:xingyuaircraft@163.com;王宇女,博士,讲师。主要研究方向:飞行器总体设计,飞行器多学科设计优化。E-mail:wangyu@nuaa.edu.cn
基金资助:
国家自然科学基金(11432007);江苏省高校优势学科建设工程资助项目

Weight prediction method of wing-structure using multidisciplinary analysis and optimization

YU Xiongqing, OUYANG Xing, XING Yu, WANG Yu

College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2015-05-11 Revised:2015-07-18 Online:2016-01-25 Published:2015-08-18
Supported by:
National Natural Science Foundation of China(11432007);Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘要/Abstract

摘要：

为了克服现有机翼结构重量计算方法的局限性,提出一种基于多学科分析优化的机翼结构重量计算方法。以客机机翼为例,阐述整个计算流程。计算流程的关键步骤包括机翼外形和结构参数化建模、气动分析模型自动生成与外形优化、结构有限元模型的自动生成和结构优化。应用CAD软件CATIA的二次开发方法,实现机翼外形几何模型、结构布置几何模型和气动分析模型的自动生成;应用MSC.Patran的PCL编程技术,实现结构有限元模型的自动生成;应用等效刚度和等效强度方法,提高结构有限元模型自动生成的稳健性,缩短结构分析和优化的计算时间;应用多学科集成和优化技术,建立机翼结构重量预测的计算平台,实现整个计算过程的自动化。算例表明这种方法稳健、有效,可快速地分析机翼外形参数与结构重量之间的关系,分析不同展向载荷分布和不同选材方案对机翼结构重量的影响。

关键词: 机翼, 重量预测, 多学科设计优化, 有限元方法, 等效方法

Abstract:

A wing-structure weight prediction method using multidisciplinary analysis and optimization is proposed to overcome the limitations of the current predictions of wing-structure weight.The wing of a short/medium haul transport was used as an example to illustrate the procedure of the method.The key steps of the method include parametric modeling for wing configuration and structural layout,automatic generation of wing aerodynamic model,aerodynamic optimization,automatic generation of the wing structural finite element model and wing structural optimization.The parametric modeling for the wing configuration and structural layout,and automatic generation of aerodynamic model was implemented by running VB codes in CATIA.The automatic generation of wing structural finite element model was implemented by running MSC.Patran Command Language(PCL) codes.The equivalent stiffness and strength method was used to enhance the robustness of the finite element model generation of the wing structure and reduce the computational burden of the structural analysis and optimization.A computational framework for the wing-structure weight prediction was established using multidisciplinary integration and optimization,and the overall process for the wing-structure weight computation was carried out automatically.The example indicates that the method is robust and efficient,and is able to rapidly obtain the impacts of wing configurations,spanwise load distributions and structural materials on the wing-structure weights.

Key words: wing, weight prediction, multidisciplinary design optimization, finite element method, equivalent method

中图分类号:

V221

余雄庆, 欧阳星, 邢宇, 王宇. 机翼结构重量预测的多学科分析优化方法[J]. 航空学报, 2016, 37(1): 235-243.

YU Xiongqing, OUYANG Xing, XING Yu, WANG Yu. Weight prediction method of wing-structure using multidisciplinary analysis and optimization[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(1): 235-243.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

机翼结构重量预测的多学科分析优化方法

Weight prediction method of wing-structure using multidisciplinary analysis and optimization

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