航空学报 > 2015, Vol. 36 Issue (3): 834-839   doi: 10.7527/S1000-6893.2014.0104

模块化飞机结构优化设计的等效多工况法

张立丰1, 姚卫星2, 邹君1   

  1. 1. 南京航空航天大学 飞行器先进设计技术国防重点学科实验室, 南京 210016;
    2. 南京航空航天大学 机械结构力学及控制国家重点实验室, 南京 210016
  • 收稿日期:2014-02-19 修回日期:2014-05-20 出版日期:2015-03-15 发布日期:2015-03-31
  • 通讯作者: 姚卫星 男, 博士, 教授, 博士生导师。主要研究方向: 飞行器综合设计、飞行器结构设计 Tel: 025-84892177 Email: wxyao@nuaa.edu.cn E-mail:wxyao@nuaa.edu.cn
  • 作者简介:张立丰 男, 硕士, 助理工程师。主要研究方向: 飞机结构设计 E-mail: 478347009@qq.com;邹君 男, 博士研究生。主要研究方向: 飞行器结构综合设计 E-mail: sc_zoujun@163.com
  • 基金资助:

    机械结构力学及控制国家重点实验室(南京航空航天大学)自主研究课题(0213G02)

Equivalent multi-case optimization architecture for modular aircraft structures

ZHANG Lifeng1, YAO Weixing2, ZOU Jun1   

  1. 1. Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2014-02-19 Revised:2014-05-20 Online:2015-03-15 Published:2015-03-31
  • Supported by:

    Supported by State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics) (0213G02)

摘要:

随着航空科技的发展,追求飞机任务的多样化和低生命周期成本成为一大趋势,其中模块化飞机设计对于未来飞机设计的多用途以及经济性具有实际意义。针对模块化飞机结构优化设计的特点,提出了等效多工况(EMCO)法,将模块化结构优化问题分解为通用模块的多工况优化问题和各专用模块的独立优化问题。通用模块等效为承受多工况载荷的结构,并按多工况优化方法进行优化设计,使通用模块质量最轻。各型号的专用模块在此基础上分别进行独立的优化设计。通用模块和专用模块交替优化,直至目标函数值收敛。最后,分别通过模块化桁架结构和机翼结构优化实例展示了该方法的运用效果,并与单独优化结果和加权单目标优化结果进行了对比。结果表明该方法降低了计算规模,收敛效果较好。

关键词: 模块化结构, 结构优化, 通用模块, 专用模块, 等效多工况法

Abstract:

With the development of technology in aviation, aircraft that can be used for a wider variety of missions and have lower lifecycle costs become more prevalent. The design of the modular aircraft has a practical significance in the multi-purpose design and economic benefit. According to the features of modular aircraft structure design, an equivalent multi-case optimization (EMCO) architecture is proposed, which divides the modular optimization problem into the optimization of common module and individual modules. The common module is transferred to a structure under multiple loading conditions, and then is optimized under minimum weight objective. The individual modules in each structure are then optimized separately. The common module and the individual module are optimized alternately until the criterion of convergence is satisfied. The method is verified by a modular truss structure and a modular wing structure example, respectively. The comparision with the results of individual design and weighted single objective design method shows that the new method reduces the calculation scale and improves the convergence efficiency.

Key words: modular structure, structural optimization, common module, individual module, equivalent multi-case optimization method

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