二相粒子复合陶瓷内应力的有限元分析及其增韧机理

无机材料学报

二相粒子复合陶瓷内应力的有限元分析及其增韧机理

杨学贵; 刘锋; 侯耀永

青岛化工学院机械工程学院高技术陶瓷研究室; 青岛266042

收稿日期:1997-05-09 修回日期:1997-08-04 出版日期:1998-06-20 网络出版日期:1998-06-20

FEM Analysis of internal Stress of Composite Ceramics and Its Toughness Mechanism

YANG Xue-Gui; LIU Feng; HOU Yao-Yong

Qingdao Institute of Chemical Technology; Department of Mechanical Engineering; Institute ofHigh Technical Ceramics Qingdao 266042 China

Received:1997-05-09 Revised:1997-08-04 Published:1998-06-20 Online:1998-06-20

摘要/Abstract

摘要： 本文建立了二相粒子复合陶瓷的有限元模型，分析了模型内部的应力分布状况，并总结了二相粒子体积比V_p变化时的应力分布的变化规律，讨论了颗粒热膨胀系数α_p与基体热膨胀系数α_m的匹配关系变化时，复合陶瓷内的应力分布状况，在此基础上，对二相粒子复合陶瓷的增韧机理做了探讨．

关键词: 二相复合陶瓷, 应力分布, 增韧机理

Abstract: A plane finite element model was established for two-phase ceramics. The residual stress distribution in the model was analyzed, and the variation regularity of
internal stress along with the second phase particle’s volumetric proporation was given. The effect to residual stress was also discussed, which is caused by the
variation of relation between the thermal expansion coefficients of the matrices and the second phase particles, the difference between interface stress of theoretical
value and calculated one was discussed, and some viewpoints of toughness enhanced mechanism for this composite material were concluded.

Key words: two-phase composite ceramics, stress distribution, toughness enhanced mechanism

中图分类号:

TB323

杨学贵,刘锋,侯耀永. 二相粒子复合陶瓷内应力的有限元分析及其增韧机理[J]. 无机材料学报.

YANG Xue-Gui,LIU Feng,HOU Yao-Yong. FEM Analysis of internal Stress of Composite Ceramics and Its Toughness Mechanism[J]. Journal of Inorganic Materials.

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