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

Abstract

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

CLC Number:

V221

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

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