...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AIAA Journal >Crashworthiness Optimization of Aircraft Hybrid Energy Absorbers Enclosing Honeycomb and Foam Structures
【24h】

Crashworthiness Optimization of Aircraft Hybrid Energy Absorbers Enclosing Honeycomb and Foam Structures

机译：包含蜂窝和泡沫结构的飞机混合能量吸收器的耐撞性优化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This research proposes a new design for a vertical strut used in aircraft fuselages. It consists of a hollow aluminum vertical strut filled with a glass-fiber-reinforced polymer honeycomb-shaped structure and polymeric foam. The design is optimized for crashworthiness of aircraft fuselage structures. The variables of the surrogate-based optimization procedures are the thicknesses of the aluminum and polymer, and the cell size and shape. The objective functions for the single-objective optimization are the specific energy absorption and the cost, whereas the metrics for the multiobjective optimization are the two aforementioned along with the peak force, mass, and absorbed energy. By using the polymeric foam, an improvement of 28% on the specific energy absorption is obtained when compared to a component without this reinforcement. Compared to a baseline model, the optimum also reduces the cost by 40%. Three Pareto fronts are obtained with different combinations of objective functions. When compared to different baseline models, the optimized models show substantial improvement, increasing the specific energy absorption while reducing peak force, mass, and costs. An important effect of the cell shape on the model's performance is observed, with the optimum models having pseudorectangular cells.
机译：这项研究提出了一种用于飞机机身的垂直支柱的新设计。它由中空的铝制垂直支撑杆组成，该支撑杆装有玻璃纤维增​​强的聚合物蜂窝状结构和聚合物泡沫。该设计针对飞机机身结构的耐撞性进行了优化。基于代理的优化过程的变量是铝和聚合物的厚度，以及孔的大小和形状。单目标优化的目标函数是单位能量吸收和成本，而多目标优化的指标是上述两个参数以及峰值力，质量和吸收的能量。与没有这种增强的部件相比，通过使用聚合物泡沫，比能量吸收提高了28％。与基准模型相比，最优模型还可将成本降低40％。通过目标函数的不同组合获得三个帕累托前沿。当与不同的基线模型进行比较时，优化的模型显示出显着的改进，增加了比能量吸收，同时降低了峰值力，质量和成本。观察到单元格形状对模型性能的重要影响，最佳模型具有伪矩形单元格。

著录项

  • 来源
    《AIAA Journal》 |2017年第2期|652-661|共10页
  • 作者

    Paz J.; Romera L.; Diaz Jacobo;

  • 作者单位

    Univ A Coruna, Struct Mech Grp, Sch Civil Engn, La Coruna 15071, Spain;

    Univ A Coruna, Struct Mech Grp, Sch Civil Engn, La Coruna 15071, Spain;

    Univ A Coruna, Struct Mech Grp, Sch Civil Engn, La Coruna 15071, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号