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首页> 外文期刊>Mathematical Problems in Engineering >Comparative Analysis of Al-Li Alloy and Aluminum Honeycomb Panel for Aerospace Application by Structural Optimization
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Comparative Analysis of Al-Li Alloy and Aluminum Honeycomb Panel for Aerospace Application by Structural Optimization

机译：结构优化对铝锂合金与蜂窝铝板的对比分析

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摘要

Al-Li alloy and aluminum honeycomb panel (AHP) are both excellent materials for aeronautical structures. In this paper, a plate-type aeronautical structure (PAS), which is a base mounting structure for 172 kg functional devices, is selected for comparative analysis with different materials. To compare system-level performance under multidisciplinary constraints, mathematical models for optimization are established and then structural optimization is carried out using Altair OptiStruct. For AHP, its honeycomb core is regarded as orthotropic material and its mechanical properties are calculated by Allen's model in order to establish finite element model (FEM). The heights of facing sheet and honeycomb core are selected as design variables for size optimization. For Al-Li alloy plate, topology optimization is carried out to obtain its most efficient load path; and then a reconstruction process is executed for practical manufacturing consideration; to obtain its final configuration, accurate size optimization is also used for reconstructed model of Al-Li alloy plate. Finally, the optimized mass and performance of two PASs are compared. Results show that AHP is slightly superior to Al-Li alloy.
机译：铝锂合金和铝蜂窝板（AHP）都是用于航空结构的出色材料。本文选择了板式航空结构（PAS），它是172千克功能设备的基础安装结构，用于与不同材料进行比较分析。为了比较多学科约束下的系统级性能，建立了用于优化的数学模型，然后使用Altair OptiStruct进行了结构优化。对于AHP，将其蜂窝芯视为正交异性材料，并通过Allen模型计算其力学性能，以建立有限元模型（FEM）。选择饰面板和蜂窝状芯的高度作为优化尺寸的设计变量。对于铝锂合金板，进行拓扑优化以获得最有效的载荷路径；然后执行重建过程以考虑实际制造；为了获得其最终构型，还对Al-Li合金板的重建模型使用了精确的尺寸优化。最后，比较了两种PAS的最佳质量和性能。结果表明，AHP略优于Al-Li合金。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第18期|815257.1-815257.12|共12页
  • 作者

    Yu Naihui; Shang Jianzhong; Cao Yujun; Ma Dongxi; Liu Qiming;

  • 作者单位

    Natl Univ Def Technol, Coll Mechatron Engn & Automat, Changsha 410073, Hunan, Peoples R China.;

    Natl Univ Def Technol, Coll Mechatron Engn & Automat, Changsha 410073, Hunan, Peoples R China.;

    Natl Univ Def Technol, Coll Mechatron Engn & Automat, Changsha 410073, Hunan, Peoples R China.;

    Ordnance Engn Coll, Ordnance Technol Inst, Shijiazhuang 050003, Peoples R China.;

    Hunan Univ, Coll Mech & Vehicle Engn, Changsha 410082, Hunan, Peoples R China.;

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