模块化飞机结构优化设计的等效多工况法

doi:10.7527/S1000-6893.2014.0104

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (3): 834-839.doi: 10.7527/S1000-6893.2014.0104

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles Next Articles

Equivalent multi-case optimization architecture for modular aircraft structures

ZHANG Lifeng¹, YAO Weixing², ZOU Jun¹

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)

Abstract

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

CLC Number:

V214

ZHANG Lifeng, YAO Weixing, ZOU Jun. Equivalent multi-case optimization architecture for modular aircraft structures[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(3): 834-839.

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Equivalent multi-case optimization architecture for modular aircraft structures

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