VERIFICATION AND VALIDATION OF A RAPID DESIGN TOOL FOR THE ANALYSIS OF THE COMPOSITE Y-JOINT OF THE D8 DOUBLE-BUBBLE AIRCRAFT

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.1615/intjmultcompeng.2023047801

Evgenia Plaka, Stephen P. Jones, Brett A. Bednarcyk, Evan J. Pineda, Richard Li, Marianna Maiaru

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引用次数: 0

Abstract

Polymer composite joints are critical aerospace components for reinforcing lightweight structures and achieving high eco-efficiency transportation standards. Optimizing complex structural joints is an iterative process. Fast and reliable numerical approaches are needed to overcome the runtime limitations of high-fidelity finite element (FE) modeling. This work proposes a computationally efficient approach based on the design tool, HyperX. Verification against FE models and experimental validation are presented for the composite Y-joint in the D8 double-bubble fuselage. Results show that the failure load of the Y-joint is predicted within 10% of the experimental failure load recorded. Two parametric studies are performed to study the effects of the curvature of the joint (110-160 deg) and the skin thickness (16, 24, and 32 ply) in the failure load predictions using a stress-based failure criterion. The maximum failure load occurred for a Y-joint with 130 deg curvature. The 32-ply skin Y-joint was predicted to have the highest failure load. Results prove the applicability of rapid joint optimization analysis for faster, computationally efficient design.

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d8双泡飞机复合材料y形接头快速分析设计工具的验证与验证

聚合物复合接头是增强轻型结构和实现高生态效率运输标准的关键航空部件。复杂结构节点优化是一个迭代过程。为了克服高保真有限元(FE)建模的运行时间限制，需要快速可靠的数值方法。这项工作提出了一种基于设计工具HyperX的计算效率方法。对D8双泡机身复合材料y型接头进行了有限元模型验证和实验验证。结果表明，预测y形接头的破坏载荷在实验记录破坏载荷的10%以内。使用基于应力的失效准则，进行了两个参数研究，以研究关节曲率(110-160度)和蒙皮厚度(16,24和32层)在失效载荷预测中的影响。最大破坏荷载发生在曲率为130度的y形接头上。预计32层蒙皮y形接头具有最高的失效载荷。结果证明了快速联合优化分析对于更快、计算效率更高的设计的适用性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.