应力降低因子和陶瓷材料抗热冲击阻力参数的性质及适用条件

李卫国; 成天宝; 张如炳; 方岱宁

doi:10.3879/j.issn.1000-0887.2012.11.001

应力降低因子和陶瓷材料抗热冲击阻力参数的性质及适用条件

doi: 10.3879/j.issn.1000-0887.2012.11.001

重庆大学资源及环境科学学院工程力学系,重庆 400030;

基金项目: 国家自然科学基金资助项目（90916009；11172336）

详细信息

通讯作者:
李卫国(1976—),男,山东人,副教授,博士,硕士生导师(联系人. Tel: +86-23-65102421; E-mail: wgli@cqu.edu.cn);方岱宁(1958—),男,北京人,教授,博士,博士生导师(Tel: +86-10-62760322; E-mail: fangdn@pku.edu.cn).

中图分类号: O343.6
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出版历程
- 收稿日期: 2012-02-29
- 修回日期: 2012-03-28
- 刊出日期: 2012-11-15

Properties and Appropriate Conditions of Stress Reduction Factor and Thermal Shock Resistance Parameters for Ceramics

¹Department of Engineering Mechanics, College of Resources and Environmental Science, Chongqing University, Chongqing 400030, P.R.China;²State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, P.R.China

摘要

摘要: 将对流条件下薄板的瞬态导热问题的解析解引入自由弹性薄板的热应力场模型中，给出了相应应力降低因子的具体表达形式．为了便于比较，进一步定义了一个新的应力降低因子．详细讨论了应力降低因子及分别对应于高Biot模数和低Biot模数的第1个和第2个抗热冲击阻力参数及与中间量级的Biot模数相对应的近似表达式的性质及适用条件．将传热学与热弹性力学或断裂力学相结合的方法及有限元方法是该文所推荐的抗热震性能计算方法．研究表明，采用断裂临界温差和断裂临界无量纲时间相结合的方式能够直观简洁地表征陶瓷材料的抗热震性能．
- 应力降低因子 /
- 抗热冲击阻力参数 /
- 陶瓷材料 /
- Biot模数 /
- Fourier数
Abstract: Through introducing the analytical solution of the transient heat conduction problem of the plate with convection into the thermal stress field model of the elastic plate, the stress reduction factor was presented explicitly in its dimensionless form. A new stress reduction factor was introduced for the purpose of comparison. The properties and appropriate conditions of the stress reduction factor, the first and second thermal shock resistance (TSR) parameters for the high and low Biot numbers respectively, and the approximation formulas for the intermediate Biot numberinterval were discussed. To investigate the TSR of ceramics more accurately, it was recommended to combine the heat transfer theory with the theory of thermoelasticity or fracture mechanics or use a numerical method. The critical rupture temperature difference and the critical rupture dimensionless time can be used to characterize the TSR of ceramics intuitively and legibly.
- stress reduction factor /
- thermal shock resistance parameter /
- ceramics /
- Biot number /
- Fourier number

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参考文献(34)

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应力降低因子和陶瓷材料抗热冲击阻力参数的性质及适用条件

doi: 10.3879/j.issn.1000-0887.2012.11.001

通讯作者:
李卫国(1976—),男,山东人,副教授,博士,硕士生导师(联系人. Tel: +86-23-65102421; E-mail: wgli@cqu.edu.cn);方岱宁(1958—),男,北京人,教授,博士,博士生导师(Tel: +86-10-62760322; E-mail: fangdn@pku.edu.cn).

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Properties and Appropriate Conditions of Stress Reduction Factor and Thermal Shock Resistance Parameters for Ceramics

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应力降低因子和陶瓷材料抗热冲击阻力参数的性质及适用条件

doi: 10.3879/j.issn.1000-0887.2012.11.001

通讯作者: 李卫国(1976—),男,山东人,副教授,博士,硕士生导师(联系人. Tel: +86-23-65102421; E-mail: wgli@cqu.edu.cn);方岱宁(1958—),男,北京人,教授,博士,博士生导师(Tel: +86-10-62760322; E-mail: fangdn@pku.edu.cn).

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出版历程

Properties and Appropriate Conditions of Stress Reduction Factor and Thermal Shock Resistance Parameters for Ceramics

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出版历程

目录

通讯作者:
李卫国(1976—),男,山东人,副教授,博士,硕士生导师(联系人. Tel: +86-23-65102421; E-mail: wgli@cqu.edu.cn);方岱宁(1958—),男,北京人,教授,博士,博士生导师(Tel: +86-10-62760322; E-mail: fangdn@pku.edu.cn).