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Influence of high fidelity structural models on the predicted mass of aircraft wing using design optimization

机译：高保真结构模型对设计优化对机翼预测质量的影响

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This paper explores the necessary and appropriate level of detail that is required to describe the structural geometry of aircraft wings accurately enough to predict the mass of the main load-carrying wing structure to an acceptable level of accuracy. Four different models of increasing structural fidelity are used to describe the wingbox structure of a realistic real-world aircraft wing. The wingbox of the NASA Common Research Model served as a test model for exploring and analyzing the trade-off between the granularity level of the wingbox geometry description under consideration and the computational resources necessary to achieve the required degree of accuracy. The mass of metallic and composite wingbox configurations was calculated via finite element analysis and design optimization techniques. The results provided an insight into the competence of certain wingbox models in predicting the mass of the metallic and composite primary wing structures to an acceptable level of accuracy, and in demonstrating the relative merits of the wingbox structural complexity and the computational time and input efforts for achieving the required level of accuracy.
机译：本文探讨了足够准确地描述飞机机翼的结构几何形状，以将主载荷机翼结构的质量预测到可接受的精度水平所需的必要和适当的详细程度。使用四种增加结构保真度的模型来描述现实世界中的飞机机翼的机翼盒结构。 NASA通用研究模型的机翼盒用作测试模型，用于探索和分析所考虑的机翼盒几何描述的粒度级别与实现所需精确度所需的计算资源之间的权衡。金属和复合机翼盒配置的质量是通过有限元分析和设计优化技术来计算的。结果为某些机翼盒模型在预测金属和复合主机翼结构的质量到可接受的精度水平以及证明机翼盒结构复杂性的相对优劣以及计算时间和输入努力方面的能力提供了见识。达到所需的准确性水平。

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