| EFBC边界下金属-FGM-陶瓷复合板稳态热应力 |
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| 引用本文： | 许杨健,苏侠杰,李正.EFBC边界下金属-FGM-陶瓷复合板稳态热应力[J].辽宁工程技术大学学报(自然科学版),2009,28(1). |
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| 作者姓名： | 许杨健 苏侠杰 李正 |
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| 作者单位： | 河北工程大学,土木工程学院,河北,邯郸,056038 |
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| 基金项目： | 河北省教育厅自然科学基金，邯郸市科技局基金 |
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| 摘 要： | 用有限元法和辛普生法研究了EFBC力学边界下中间夹FGM金属/陶瓷复合板的稳态热应力问题,检验了研究方法的正确性,给出了该材料复合板的稳态热应力场分布(Ta=400 K,Tb=1 700 K).结果表明:FGM层厚度的增加,对EFBC复合板的稳态热应力影响不明显;当M=1时,热应力曲线平缓而光滑,当M=0.1和10时,热应力曲线出现明显的转折点;随着FGM层孔隙率的增大,三层板的衔接界面处,热应力变化增大,曲线出现钝角,金属侧的最大拉应力增大38.9%,陶瓷侧的最大压应力增大32.67%.与金属/陶瓷二层复合板界面处热应力出现突变相比,夹FGM金属/陶瓷复合板的热应力非常缓和.此结果为该复合板的设计和应用提供了准确的理论计算依据.
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| 关 键 词： | 金属.FGM-陶瓷复合板 稳态热应力 有限元法 |
Steady thermal stresses in metal-FGM-ceramic composite plate under EFBC mechanical boundary |
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| XU Yangjian,SU Xiajie,Li Zheng.Steady thermal stresses in metal-FGM-ceramic composite plate under EFBC mechanical boundary[J].Journal of Liaoning Technical University (Natural Science Edition),2009,28(1). |
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| Authors: | XU Yangjian SU Xiajie Li Zheng |
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| Institution: | School of Civil Engineering;Hebei University of Engineering;Handan 056038;China |
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| Abstract: | The steady thermal stress in the metal-FGM-ceramic composite plate under EFBC mechanical boundary was analyzed by the FEM and the Sinpson method.The accuracy of this method was examined.The stress distributions during heating process(Ta=400K,Tb=1 700K) were obtained.The results are as follows: The influence of increase of FGM layer thickness on the steady thermal stress in the composite EFBC plate is not obvious.When M = 1,thermal stress curve is relaxed and smooth,and when M = 0.1and 10,a distinct turning ... |
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| Keywords: | metal-FGM-ceramic composite plate steady thermal stress FEM |
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