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Volume fraction optimization of functionally graded composite panels for stress reduction and critical temperature

机译：功能梯度复合板的体积分数优化，以减少应力和临界温度

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摘要

The volume fraction optimization of functionally graded (FC) composite panels is studied by considering stress reduction and thermo-mechanical buckling. The structure is made up of ceramic layer, functionally graded materials (FGMs) and metal layer. Material properties are assumed as temperature dependent, and continuously varying in the thickness direction according to a simple power-law distribution in terms of the ceramic and metal volume fractions in FGMs. The 3-D finite element model is adopted for modeling of material properties and temperature fields in the structure. For the various FGM thickness ratios and volume fraction distributions, mechanical stress analysis and thermo-mechanical buckling analysis are performed. Based on the results, the optimal designs of FGMs panels are investigated for stress reduction and improving thermo-mechanical buckling behavior.
机译：通过考虑应力降低和热机械屈曲来研究功能梯度（FC）复合面板的体积分数优化。该结构由陶瓷层，功能梯度材料（FGM）和金属层组成。假定材料特性与温度有关，并且根据简单的幂律分布，就FGM中的陶瓷和金属体积分数而言，材料特性在厚度方向上连续变化。采用3-D有限元模型对结构中的材料特性和温度场进行建模。对于各种FGM厚度比和体积分数分布，进行了机械应力分析和热机械屈曲分析。根据结果​​，研究了FGMs面板的最佳设计，以减轻应力并改善热机械屈曲性能。

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  • 来源
    《Finite elements in analysis & design》 |2009年第11期|845-851|共7页
  • 作者

    Kyung-Su Na; Ji-Hwan Ki;

  • 作者单位

    School of Mechanical and Aerospace Engineering, College of Engineering, Seoul National University, Seoul 151-742, Republic of Korea Satellite Group, Planning & Developing Team. Korea Institute of Aerospace Technology, Korean Air, Jeonmin-Dong, Yusung-Gu, Daejeon 305-811, South Korea;

    Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, College of Engineering, Seoul National University. Kwanak-gu, SMnrim-dong, San 56-1, Seoul 151-742, Republic of Korea;

  • 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

    optimization; functionally graded materials; 3-D finite element model; stress reduction; thermo-mechanical buckling;

    机译：优化;功能分级材料;3-D有限元模型;减轻压力;热机械屈曲;

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