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Design optimization of a business aircraft seat considering static and dynamic certification loading and manufacturability
Structural and Multidisciplinary Optimization ( IF 3.6 ) Pub Date : 2020-07-04 , DOI: 10.1007/s00158-020-02650-z
Neil C. Trivers , Christopher A. Carrick , Il Yong Kim

A conceptual design for a lightweight business aircraft seat was developed using topology optimization in a 2-stage approach to consider both the static and dynamic certification test requirements of the Canadian Aviation Regulations (CARs) Section 525.561 and 525.562, respectively. Preliminary optimization was performed using static load requirements, and the interpretation of the optimization results was done considering key manufacturability metrics to reduce the cost of manufacturing components when using traditional subtractive manufacturing methods. A series of explicit dynamic models was run to predict the behavior of the seat during 14g and 16g certification tests and to estimate the maximum loads which the anthropomorphic test device (ATD) applies to the seat structure. Peak seatbelt loads were estimated at 9060 N and 8955 N for the left and right sides, respectively, and the asymmetry of the loads can be attributed to the 10° yaw of the aircraft required by the 16g certification test. Topology optimization was used to refine the design at the component level and further reduce weight using the loads determined in the dynamic modeling. The final conceptual design was 32% lighter when compared with the baseline structural components, and key manufacturability cost metrics were reduced by 24%.



中文翻译:

考虑静态和动态认证加载和可制造性的商务飞机座椅的设计优化

轻型商务飞机座椅的概念设计是通过两阶段方法中的拓扑优化开发的,分别考虑了加拿大航空法规(CAR)525.561和525.562部分的静态和动态认证测试要求。使用静态负荷要求执行了初步优化,并考虑了关键可制造性指标来进行优化结果的解释,以降低使用传统减法制造方法时制造零件的成本。运行了一系列显式动态模型,以预测座椅在14g和16g认证测试期间的行为,并估算拟人测试设备(ATD)对座椅结构施加的最大载荷。左侧和右侧的安全带峰值载荷估计分别为9060 N和8955 N,载荷的不对称性可归因于16g认证测试所需的飞机10°偏航。拓扑优化用于改进组件级别的设计,并使用动态建模中确定的负载进一步减轻重量。与基线结构组件相比,最终的概念设计减轻了32%,关键的可制造性成本指标降低了24%。

更新日期:2020-07-05
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