Optimization of volume fractions for functionally graded panels considering stress and critical temperature

Kyung-Su Na; Ji-Hwan Kim

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Optimization of volume fractions for functionally graded panels considering stress and critical temperature

机译：考虑应力和临界温度的功能梯度板的体积分数优化

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摘要

Volume fraction optimization of Functionally Graded Materials (FGMs) is investigated considering stress and critical temperature. Material properties are assumed to be temperature dependent, and are assumed to be varied continuously in the thickness direction according to a simple power law distribution in terms of the volume fractions of the constituent materials. The effective material properties are obtained by applying linear rule of mixtures. The 3-D finite element model is adopted using an 18-node solid element to analyze more accurately the variation of material properties and temperature field in the thickness direction. For the various FGMs volume fraction distributions, mechanical stress analysis and thermo-mechanical buckling analysis are performed to get the critical conditions. Finally, the optimal designs of FGMs panels are investigated for stress reduction and improving thermo-mechanical buckling behavior.

机译：考虑应力和临界温度，研究了功能梯度材料（FGM）的体积分数优化。假定材料特性是温度相关的，并且假定根据组成材料的体积分数，根据简单的幂定律分布在厚度方向上连续变化。通过应用混合物的线性规则可获得有效的材料性能。采用18节点实体元素的3-D有限元模型可以更准确地分析材料特性和温度场在厚度方向上的变化。对于各种FGM的体积分数分布，进行了机械应力分析和热机械屈曲分析，以获得临界条件。最后，研究了FGM面板的最佳设计，以减少应力并改善热机械屈曲性能。

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来源
《Composite Structures》 |2009年第4期|509-516|共8页
作者
Kyung-Su Na; Ji-Hwan Kim;
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作者单位

School of Mechanical and Aerospace Engineering, College of Engineering, Seoul National University, Seoul 151-742, South Korea;

Institute of Advanced Aerospace Technology, School of Mechanical and Aerospace Engineering, College of Engineering, Seoul National University, Seoul 151-742, South Korea;

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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
functionally graded materials; 3-D finite element method; stress analysis; thermo-mechanical buckling; optimal design;

机译：功能分级材料;3-D有限元法;压力分析;热机械屈曲优化设计;

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1. Volume fraction optimization of functionally graded composite panels for stress reduction and critical temperature [J] . Kyung-Su Na, Ji-Hwan Ki Finite elements in analysis & design . 2009,第11期

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
2. Volume fraction optimization for step-formed functionally graded plates considering stress and critical temperature [J] . Kyung-Su Na, Ji-Hwan Kim Composite Structures . 2010,第6期

机译：考虑应力和临界温度的阶梯成型功能梯度板的体积分数优化
3. Minimizing Thermal Residual Stress in Ni/Al2O3 Functionally Graded Material Plate by Volume Fraction Optimization [J] . Wei Xing, Chen Wen, Chen Bin Computers, Materials & Continua . 2015,第1期

机译：通过体积分数优化使Ni / Al2O3功能梯度材料板中的热残余应力最小化
4. Volume Fraction Optimization of Functionally Graded Composite Plates for Stress Reduction and Thermo-Mechanical Buckling [C] . Kyung-Su Na, Ji-Hwan Kim International Conference on Multiscale and Functionally Graded Materials . 2008

机译：用于应力减压和热机械屈曲的功能梯度复合板的体积分数优化
5. Sandwich panels with functionally graded core. [D] . Apetre, Nicoleta Alina. 2005

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Optimization of volume fractions for functionally graded panels considering stress and critical temperature

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