伸缩翼热防护与承载一体化结构的设计与分析

IF 1.9 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Hong Xiao, Hongwei Guo, Chunfeng Li, Dongdong Xie, Chunlei Xie, Rongqiang Liu
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引用次数: 0

摘要

设计了一种新型的三层一体化结构,以满足高速伸缩翼飞机的隔热和承载要求。该结构由隔热层、承重骨架和填充气凝胶的金字塔晶格结构组成,以实现隔热功能。对整体结构的设计参数进行了灵敏度分析和优化设计,并采用响应面法对结构进行了优化。与初始结构相比,优化结构的等效导热系数为0.0276,降低了40%,相对密度为685。5kg/m3,降低3.7%,导热系数比陶瓷隔热砖低20%以上。然后,将一体化结构视为均质板,确定了等效的力学和热学参数,并通过仿真和实验结果进行了验证。等效误差控制在10%以内。最后,建立了伸缩翼的仿真模型。结果表明,在20 kPa表面压力为3.96 mm。结构表面的耐温性高达1500°C,1200后机翼内部温度控制在200°C以内 s的热负荷。结果表明,该一体化结构满足高速伸缩机翼的要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and analysis of thermal protection and load-bearing integrated structure of the telescopic wing
A novel three-layer integrated structure was designed to meet the thermal-insulation and load-bearing requirements of high-speed telescopic wing aircraft. The structure consists of heat shield layer, load-bearing skeleton, and pyramid lattice structure filled with aerogel to achieve the insulation function. Sensitivity analysis of the design parameters and optimal design of the integrated structure was carried out, and the structure was optimized by using response surface method. Compared to the initial structure, the optimized structure has an equivalent thermal conductivity of 0.0276, reduced by 40%, and a relative density of 685 . 5 kg / m 3 , reduced by 3.7%. And it has a thermal conductivity that is over 20% lower than that of ceramic insulating tiles. Then, the integrated structure was regarded as a homogeneous plate, and the equivalent mechanical and thermal parameters were determined and verified by simulation and experimental results. The equivalence error was controlled within 10%. Finally, a simulation model of the telescopic wing was established. The result shows that the maximum deformation under 20 kPa surface pressure is 3.96 mm. The temperature resistance of the structure surface is up to 1500°C, and the wing internal temperature is controlled within 200°C after 1200 s of thermal loading. The results verified that the integrated structure meets the requirement of a high-speed telescopic wing.
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来源期刊
Advances in Mechanical Engineering
Advances in Mechanical Engineering 工程技术-机械工程
CiteScore
3.60
自引率
4.80%
发文量
353
审稿时长
6-12 weeks
期刊介绍: Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering
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